<TABLE cellSpacing=1 cellPadding=6 width="100%" border=0><TBODY><TR><TD colSpan=2><TABLE width="100%" border=0><TBODY><TR><TD style="PADDING-TOP: 4px" vAlign=top colSpan=2>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]15W-30 Mobil-1 too thin?<!-- google_ad_section_end -->
[/FONT][FONT=Trebuchet MS, Verdana, Tahoma, Arial]March 24 2000 at 11:04 AM[FONT=Trebuchet MS, Verdana, Tahoma, Arial][/FONT][/FONT]</TD><TD vAlign=top align=right>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]Gilles [/FONT]</TD></TR><TR><TD vAlign=bottom colSpan=3><HR></TD></TR><TR><TD colSpan=3>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]<!-- google_ad_section_start -->It's Mobil-1 15W-30W too thin to use on a 1500 with 57,000 miles on it?
I used Mobil-1 15W-50 last time and I am wandering if I could use thinner oil, this particular engine does not burn any oil and the plugs are very clean
The weather here gets up to 100+ in the middle of summer
Any suggestions? Thanks in advance and best regards, Gilles
P.S. I used the 15W-30 on my wife's car with 7500 miles on it and it revs great!
I wanted to try it on my X but I don't want to blow things up!
<!-- google_ad_section_end -->
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[/FONT]</TD></TR></TBODY></TABLE></TD></TR><TR><TD>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]Author[/FONT]</TD><TD>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]Reply[/FONT]</TD></TR><TR><TD vAlign=top noWrap width="17.9%">[FONT=Trebuchet MS, Verdana, Tahoma, Arial]<SCRIPT language=Javascript> <!-- var n54_em; n54_em = ""; n54_em = n54_em + "m";n54_em = n54_em + "a";n54_em = n54_em + "c";n54_em = n54_em + "@";n54_em = n54_em + "s";n54_em = n54_em + "e";n54_em = n54_em + "a";n54_em = n54_em + "t";n54_em = n54_em + "t";n54_em = n54_em + "l";n54_em = n54_em + "e";n54_em = n54_em + "x";n54_em = n54_em + "1";n54_em = n54_em + "9";n54_em = n54_em + ".";n54_em = n54_em + "o";n54_em = n54_em + "r";n54_em = n54_em + "g"; document.write("Mac"); // --> </SCRIPT>Mac <NOSCRIPT></NOSCRIPT>[/FONT]
[FONT=Trebuchet MS, Verdana, Tahoma, Arial][/FONT]</TD><TD style="PADDING-LEFT: 15px" vAlign=top><TABLE cellSpacing=0 cellPadding=1 width="100%" border=0><TBODY><TR><TD align=left>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]<!-- google_ad_section_start -->engine oil and heat...<!-- google_ad_section_end -->
[/FONT][FONT=Trebuchet MS, Verdana, Tahoma, Arial][/FONT]</TD><TD vAlign=top align=right>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]March 25 2000, 8:23 AM [/FONT]</TD></TR></TBODY></TABLE><TABLE cellSpacing=0 cellPadding=1 width="100%" border=0><TBODY><TR><TD style="PADDING-LEFT: 15px">
[FONT=Trebuchet MS, Verdana, Tahoma, Arial]<!-- google_ad_section_start -->Hi Gilles,
I don't think you should be using the 15-30 oil in your region, but that is just my view. Specifically, I would say that you should consider the heat factor where you live...
Up here in Seattle it never gets "that hot" or "that cold". Maybe it will reach the '80s or sometimes even into the '90s in the highest point of the summer, but in general it is cooler here year-round, and it rarely dips too far below freezing even in the winter. The idea with oil is that (naturally) the hotter it is outside, the thinner the oil will act. If you live in a cold region, thin oil is better. If you live in a hot one though, thicker oil might be necessary...
I'll just tell you what "The Book Says" and you can be your own judge:
Outside Temp = 5ºf (-15ºc) or colder, then use SAE-10W.
Outside Temp = 5ºf (-15ºc) to 32ºf (0ºc), then use 10W-30.
Outside Temp = 32ºf (0ºc) or hotter, then use 20W-40.
I typically use 20W-50 in my X with no ill effects. In the dead of winter I would probably switch to a thinner oil, but I never drive it in the winter anymore
-Mac.
<!-- google_ad_section_end -->
[/FONT]</TD></TR></TBODY></TABLE><TABLE cellSpacing=0 cellPadding=4 width="100%" border=0><TBODY><TR><TD vAlign=top align=left>[FONT=Trebuchet MS, Verdana, Tahoma, Arial] [/FONT]</TD><TD vAlign=top noWrap align=right>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]
[/FONT]</TD></TR></TBODY></TABLE></TD></TR><TR><TD vAlign=top noWrap width="17.9%">[FONT=Trebuchet MS, Verdana, Tahoma, Arial]<SCRIPT language=Javascript> <!-- var n54_em; n54_em = ""; n54_em = n54_em + "d";n54_em = n54_em + "c";n54_em = n54_em + "m";n54_em = n54_em + "e";n54_em = n54_em + "h";n54_em = n54_em + "l";n54_em = n54_em + "@";n54_em = n54_em + "y";n54_em = n54_em + "a";n54_em = n54_em + "h";n54_em = n54_em + "o";n54_em = n54_em + "o";n54_em = n54_em + ".";n54_em = n54_em + "c";n54_em = n54_em + "o";n54_em = n54_em + "m"; document.write("Danny"); // --> </SCRIPT>Danny <NOSCRIPT></NOSCRIPT>[/FONT]
[FONT=Trebuchet MS, Verdana, Tahoma, Arial][/FONT]</TD><TD style="PADDING-LEFT: 30px" vAlign=top><TABLE cellSpacing=0 cellPadding=1 width="100%" border=0><TBODY><TR><TD align=left>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]<!-- google_ad_section_start -->Oil and pressure<!-- google_ad_section_end -->
[/FONT][FONT=Trebuchet MS, Verdana, Tahoma, Arial][/FONT]</TD><TD vAlign=top align=right>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]March 26 2000, 2:24 PM [/FONT]</TD></TR></TBODY></TABLE><TABLE cellSpacing=0 cellPadding=1 width="100%" border=0><TBODY><TR><TD style="PADDING-LEFT: 30px">
[FONT=Trebuchet MS, Verdana, Tahoma, Arial]<!-- google_ad_section_start -->
Gilles,
I have always heard it's a good idea to choose the weight of the oil based on your oil pressure readings, assuming your gauge is correct. If it's not, use an external guage available at any aparts haus. Look in your manual (I don't have an X manual off hand, as I don't own an X (yet)), and see what your oil pressure is supposed to be at idle and at speed, usually 2500rpm or so. If your current readings are too low, switch to a thicker oil, and verse vica. It's more important to choose your oil weight based on oil pressure than on outside temp (not to slight Mac), as some old Swami told me. By the way, where do you live? I, too, experience 100+ about 55 days each summer. Good luck!
-Danny<!-- google_ad_section_end -->
[/FONT]</TD></TR></TBODY></TABLE><TABLE cellSpacing=0 cellPadding=4 width="100%" border=0><TBODY><TR><TD vAlign=top align=left>[FONT=Trebuchet MS, Verdana, Tahoma, Arial] [/FONT]</TD><TD vAlign=top noWrap align=right>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]
[/FONT]</TD></TR></TBODY></TABLE></TD></TR><TR><TD vAlign=top noWrap width="17.9%">[FONT=Trebuchet MS, Verdana, Tahoma, Arial]Mac[/FONT]
[FONT=Trebuchet MS, Verdana, Tahoma, Arial][/FONT]</TD><TD style="PADDING-LEFT: 45px" vAlign=top><TABLE cellSpacing=0 cellPadding=1 width="100%" border=0><TBODY><TR><TD align=left>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]<!-- google_ad_section_start -->you are correct sir...<!-- google_ad_section_end -->
[/FONT][FONT=Trebuchet MS, Verdana, Tahoma, Arial][/FONT]</TD><TD vAlign=top align=right>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]March 27 2000, 8:19 AM [/FONT]</TD></TR></TBODY></TABLE><TABLE cellSpacing=0 cellPadding=1 width="100%" border=0><TBODY><TR><TD style="PADDING-LEFT: 45px">
[FONT=Trebuchet MS, Verdana, Tahoma, Arial]<!-- google_ad_section_start -->...but I have found (in general) over time that the temp method works fine for typical street use of the car...
By the way, the only spec given in the factory manual on the pressure method is based on temperature anyway, not rpm:
"Oil pressure @ engine temp of 212°f (100°c) = 49.7 to 71 psi (3.5 to 5 kg/cm²)"
Hope this helps! -Mac.
<!-- google_ad_section_end -->
[/FONT]</TD></TR></TBODY></TABLE><TABLE cellSpacing=0 cellPadding=4 width="100%" border=0><TBODY><TR><TD vAlign=top align=left>[FONT=Trebuchet MS, Verdana, Tahoma, Arial] [/FONT]</TD><TD vAlign=top noWrap align=right>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]
[/FONT]</TD></TR></TBODY></TABLE></TD></TR><TR><TD vAlign=top noWrap width="17.9%">[FONT=Trebuchet MS, Verdana, Tahoma, Arial]Gilles[/FONT]
[FONT=Trebuchet MS, Verdana, Tahoma, Arial][/FONT]</TD><TD style="PADDING-LEFT: 60px" vAlign=top><TABLE cellSpacing=0 cellPadding=1 width="100%" border=0><TBODY><TR><TD align=left>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]<!-- google_ad_section_start -->Thanks guys! somehow I knew I couldn't get away with<!-- google_ad_section_end -->
[/FONT][FONT=Trebuchet MS, Verdana, Tahoma, Arial][/FONT]</TD><TD vAlign=top align=right>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]March 27 2000, 1:13 PM [/FONT]</TD></TR></TBODY></TABLE><TABLE cellSpacing=0 cellPadding=1 width="100%" border=0><TBODY><TR><TD style="PADDING-LEFT: 60px">
[FONT=Trebuchet MS, Verdana, Tahoma, Arial]<!-- google_ad_section_start -->Deep inside I knew that I shouldn't use 15W-30 on my engine with 60K on it! But I was hoping to use it since Mobil-1 is fully syntetic (it's supposed to hold up much better with heat than mineral based oils) That is why I had tough before that maybe I could get away with it (now, I know I was wrong)
You will not believe how quicker (and nice) my wife's car revs up with the Mobil-1 15W-30.
Perhaps I just was dreaming to do wanders on my 1500...
Thanks again!!! GP<!-- google_ad_section_end -->
[/FONT]</TD></TR></TBODY></TABLE><TABLE cellSpacing=0 cellPadding=4 width="100%" border=0><TBODY><TR><TD vAlign=top align=left>[FONT=Trebuchet MS, Verdana, Tahoma, Arial] [/FONT]</TD><TD vAlign=top noWrap align=right>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]
[/FONT]</TD></TR></TBODY></TABLE></TD></TR><TR><TD vAlign=top noWrap width="17.9%">[FONT=Trebuchet MS, Verdana, Tahoma, Arial]Mark Seelbinder[/FONT]
[FONT=Trebuchet MS, Verdana, Tahoma, Arial][/FONT]</TD><TD style="PADDING-LEFT: 75px" vAlign=top><TABLE cellSpacing=0 cellPadding=1 width="100%" border=0><TBODY><TR><TD align=left>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]<!-- google_ad_section_start -->Why not use Mobil 1 15w50?<!-- google_ad_section_end -->
[/FONT][FONT=Trebuchet MS, Verdana, Tahoma, Arial][/FONT]</TD><TD vAlign=top align=right>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]March 27 2000, 2:18 PM [/FONT]</TD></TR></TBODY></TABLE><TABLE cellSpacing=0 cellPadding=1 width="100%" border=0><TBODY><TR><TD style="PADDING-LEFT: 75px">
[FONT=Trebuchet MS, Verdana, Tahoma, Arial]<!-- google_ad_section_start -->I've been using it in my '87 X for years with no signs of ill effect. This car sees 15-20 autocross events and 3000 miles of street use per year.<!-- google_ad_section_end -->
[/FONT]</TD></TR></TBODY></TABLE><TABLE cellSpacing=0 cellPadding=4 width="100%" border=0><TBODY><TR><TD vAlign=top align=left>[FONT=Trebuchet MS, Verdana, Tahoma, Arial] [/FONT]</TD><TD vAlign=top noWrap align=right>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]
[/FONT]</TD></TR></TBODY></TABLE></TD></TR><TR><TD vAlign=top noWrap width="17.9%">[FONT=Trebuchet MS, Verdana, Tahoma, Arial]Mark Seelbinder[/FONT]
[FONT=Trebuchet MS, Verdana, Tahoma, Arial][/FONT]</TD><TD style="PADDING-LEFT: 90px" vAlign=top><TABLE cellSpacing=0 cellPadding=1 width="100%" border=0><TBODY><TR><TD align=left>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]<!-- google_ad_section_start -->Mac, your book differs from mine...<!-- google_ad_section_end -->
[/FONT][FONT=Trebuchet MS, Verdana, Tahoma, Arial][/FONT]</TD><TD vAlign=top align=right>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]March 27 2000, 2:31 PM [/FONT]</TD></TR></TBODY></TABLE><TABLE cellSpacing=0 cellPadding=1 width="100%" border=0><TBODY><TR><TD style="PADDING-LEFT: 90px">
[FONT=Trebuchet MS, Verdana, Tahoma, Arial]<!-- google_ad_section_start -->My factory owner's manual shows the following:
minimum below 5 deg F = SAE 10W
minimum between 5 deg F and 32 deg F = SAE 20W
minimum above 32 deg F,max to 95 deg F = SAE 30
minimum above 32 deg F,max > 95 deg F = SAE 40
min between 5 deg F & 32 deg F, max > 95 deg F =
SAE 15W/40
This is why I felt safe with 15W/50 Mobil 1<!-- google_ad_section_end -->
[/FONT]</TD></TR></TBODY></TABLE><TABLE cellSpacing=0 cellPadding=4 width="100%" border=0><TBODY><TR><TD vAlign=top align=left>[FONT=Trebuchet MS, Verdana, Tahoma, Arial] [/FONT]</TD><TD vAlign=top noWrap align=right>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]
[/FONT]</TD></TR></TBODY></TABLE></TD></TR><TR><TD vAlign=top noWrap width="17.9%">[FONT=Trebuchet MS, Verdana, Tahoma, Arial]<SCRIPT language=Javascript> <!-- var n54_em; n54_em = ""; n54_em = n54_em + "m";n54_em = n54_em + "a";n54_em = n54_em + "c";n54_em = n54_em + "@";n54_em = n54_em + "s";n54_em = n54_em + "e";n54_em = n54_em + "a";n54_em = n54_em + "t";n54_em = n54_em + "t";n54_em = n54_em + "l";n54_em = n54_em + "e";n54_em = n54_em + "x";n54_em = n54_em + "1";n54_em = n54_em + "9";n54_em = n54_em + ".";n54_em = n54_em + "o";n54_em = n54_em + "r";n54_em = n54_em + "g"; document.write("Mac"); // --> </SCRIPT>Mac <NOSCRIPT></NOSCRIPT>[/FONT]
[FONT=Trebuchet MS, Verdana, Tahoma, Arial][/FONT]</TD><TD style="PADDING-LEFT: 105px" vAlign=top><TABLE cellSpacing=0 cellPadding=1 width="100%" border=0><TBODY><TR><TD align=left>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]<!-- google_ad_section_start -->well well well !<!-- google_ad_section_end -->
[/FONT][FONT=Trebuchet MS, Verdana, Tahoma, Arial][/FONT]</TD><TD vAlign=top align=right>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]March 28 2000, 9:35 AM [/FONT]</TD></TR></TBODY></TABLE><TABLE cellSpacing=0 cellPadding=1 width="100%" border=0><TBODY><TR><TD style="PADDING-LEFT: 105px">
[FONT=Trebuchet MS, Verdana, Tahoma, Arial]<!-- google_ad_section_start -->That's interesting!
Gilles, I never intended to make you feel "wrong" - in fact, this is a highly subjective decision so I don't know wether it is even possible to be "wrong"... ?
I was just giving my personal opinion, which is that I would be concerned the 15-30 oil would act too thin in such hot climates. Again, this is just my opinion, not "the word" carved in stone...
Mark, regarding your input on this thread, what is the climate like where you live?
About your owner's manual info, if you look closely at the numbers it is not a big difference from the numbers given in my shop manual. Yours seems to mainly give SAE values though, while mine lists variable-weight values.
Honestly I think there is some margin for flexibility here. It would probably not kill you Gilles to try the oil if you wanted to, I really was just trying to say that I would probably not. Again, though, that is just my personal view - nothing absolute
-Mac.
<!-- google_ad_section_end -->
[/FONT]</TD></TR></TBODY></TABLE><TABLE cellSpacing=0 cellPadding=4 width="100%" border=0><TBODY><TR><TD vAlign=top align=left>[FONT=Trebuchet MS, Verdana, Tahoma, Arial] [/FONT]</TD><TD vAlign=top noWrap align=right>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]
[/FONT]</TD></TR></TBODY></TABLE></TD></TR><TR><TD vAlign=top noWrap width="17.9%">[FONT=Trebuchet MS, Verdana, Tahoma, Arial]Mark Seelbinder[/FONT]
[FONT=Trebuchet MS, Verdana, Tahoma, Arial][/FONT]</TD><TD style="PADDING-LEFT: 120px" vAlign=top><TABLE cellSpacing=0 cellPadding=1 width="100%" border=0><TBODY><TR><TD align=left>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]<!-- google_ad_section_start -->My climate is different<!-- google_ad_section_end -->
[/FONT][FONT=Trebuchet MS, Verdana, Tahoma, Arial][/FONT]</TD><TD vAlign=top align=right>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]March 28 2000, 2:52 PM [/FONT]</TD></TR></TBODY></TABLE><TABLE cellSpacing=0 cellPadding=1 width="100%" border=0><TBODY><TR><TD style="PADDING-LEFT: 120px">
[FONT=Trebuchet MS, Verdana, Tahoma, Arial]<!-- google_ad_section_start -->Temps run between 40deg F and 90deg F during "Sports Car Season". But, I would think at higher temps you would not want to go to a thinner oil. Keep in mind, this is a personal opinion based on very little scientific fact
<!-- google_ad_section_end -->
[/FONT]</TD></TR></TBODY></TABLE><TABLE cellSpacing=0 cellPadding=4 width="100%" border=0><TBODY><TR><TD vAlign=top align=left>[FONT=Trebuchet MS, Verdana, Tahoma, Arial] [/FONT]</TD><TD vAlign=top noWrap align=right>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]
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[/FONT][FONT=Trebuchet MS, Verdana, Tahoma, Arial]March 24 2000 at 11:04 AM[FONT=Trebuchet MS, Verdana, Tahoma, Arial][/FONT][/FONT]</TD><TD vAlign=top align=right>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]Gilles [/FONT]</TD></TR><TR><TD vAlign=bottom colSpan=3><HR></TD></TR><TR><TD colSpan=3>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]<!-- google_ad_section_start -->It's Mobil-1 15W-30W too thin to use on a 1500 with 57,000 miles on it?
I used Mobil-1 15W-50 last time and I am wandering if I could use thinner oil, this particular engine does not burn any oil and the plugs are very clean
The weather here gets up to 100+ in the middle of summer
Any suggestions? Thanks in advance and best regards, Gilles
P.S. I used the 15W-30 on my wife's car with 7500 miles on it and it revs great!
I wanted to try it on my X but I don't want to blow things up!
<!-- google_ad_section_end -->
[/FONT]</TD></TR></TBODY></TABLE><TABLE cellPadding=4 width="100%" border=0><TBODY><TR><TD vAlign=top noWrap align=left>[FONT=Trebuchet MS, Verdana, Tahoma, Arial] [/FONT]</TD><TD vAlign=top align=right>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]
[FONT=Trebuchet MS, Verdana, Tahoma, Arial][/FONT]</TD><TD style="PADDING-LEFT: 15px" vAlign=top><TABLE cellSpacing=0 cellPadding=1 width="100%" border=0><TBODY><TR><TD align=left>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]<!-- google_ad_section_start -->engine oil and heat...<!-- google_ad_section_end -->
[/FONT][FONT=Trebuchet MS, Verdana, Tahoma, Arial][/FONT]</TD><TD vAlign=top align=right>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]March 25 2000, 8:23 AM [/FONT]</TD></TR></TBODY></TABLE><TABLE cellSpacing=0 cellPadding=1 width="100%" border=0><TBODY><TR><TD style="PADDING-LEFT: 15px">
[FONT=Trebuchet MS, Verdana, Tahoma, Arial]<!-- google_ad_section_start -->Hi Gilles,
I don't think you should be using the 15-30 oil in your region, but that is just my view. Specifically, I would say that you should consider the heat factor where you live...
Up here in Seattle it never gets "that hot" or "that cold". Maybe it will reach the '80s or sometimes even into the '90s in the highest point of the summer, but in general it is cooler here year-round, and it rarely dips too far below freezing even in the winter. The idea with oil is that (naturally) the hotter it is outside, the thinner the oil will act. If you live in a cold region, thin oil is better. If you live in a hot one though, thicker oil might be necessary...
I'll just tell you what "The Book Says" and you can be your own judge:
Outside Temp = 5ºf (-15ºc) or colder, then use SAE-10W.
Outside Temp = 5ºf (-15ºc) to 32ºf (0ºc), then use 10W-30.
Outside Temp = 32ºf (0ºc) or hotter, then use 20W-40.
I typically use 20W-50 in my X with no ill effects. In the dead of winter I would probably switch to a thinner oil, but I never drive it in the winter anymore
<!-- google_ad_section_end -->
[/FONT]</TD></TR></TBODY></TABLE><TABLE cellSpacing=0 cellPadding=4 width="100%" border=0><TBODY><TR><TD vAlign=top align=left>[FONT=Trebuchet MS, Verdana, Tahoma, Arial] [/FONT]</TD><TD vAlign=top noWrap align=right>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]
[FONT=Trebuchet MS, Verdana, Tahoma, Arial][/FONT]</TD><TD style="PADDING-LEFT: 30px" vAlign=top><TABLE cellSpacing=0 cellPadding=1 width="100%" border=0><TBODY><TR><TD align=left>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]<!-- google_ad_section_start -->Oil and pressure<!-- google_ad_section_end -->
[/FONT][FONT=Trebuchet MS, Verdana, Tahoma, Arial][/FONT]</TD><TD vAlign=top align=right>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]March 26 2000, 2:24 PM [/FONT]</TD></TR></TBODY></TABLE><TABLE cellSpacing=0 cellPadding=1 width="100%" border=0><TBODY><TR><TD style="PADDING-LEFT: 30px">
[FONT=Trebuchet MS, Verdana, Tahoma, Arial]<!-- google_ad_section_start -->
Gilles,
I have always heard it's a good idea to choose the weight of the oil based on your oil pressure readings, assuming your gauge is correct. If it's not, use an external guage available at any aparts haus. Look in your manual (I don't have an X manual off hand, as I don't own an X (yet)), and see what your oil pressure is supposed to be at idle and at speed, usually 2500rpm or so. If your current readings are too low, switch to a thicker oil, and verse vica. It's more important to choose your oil weight based on oil pressure than on outside temp (not to slight Mac), as some old Swami told me. By the way, where do you live? I, too, experience 100+ about 55 days each summer. Good luck!
-Danny<!-- google_ad_section_end -->
[/FONT]</TD></TR></TBODY></TABLE><TABLE cellSpacing=0 cellPadding=4 width="100%" border=0><TBODY><TR><TD vAlign=top align=left>[FONT=Trebuchet MS, Verdana, Tahoma, Arial] [/FONT]</TD><TD vAlign=top noWrap align=right>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]
[FONT=Trebuchet MS, Verdana, Tahoma, Arial][/FONT]</TD><TD style="PADDING-LEFT: 45px" vAlign=top><TABLE cellSpacing=0 cellPadding=1 width="100%" border=0><TBODY><TR><TD align=left>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]<!-- google_ad_section_start -->you are correct sir...<!-- google_ad_section_end -->
[/FONT][FONT=Trebuchet MS, Verdana, Tahoma, Arial][/FONT]</TD><TD vAlign=top align=right>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]March 27 2000, 8:19 AM [/FONT]</TD></TR></TBODY></TABLE><TABLE cellSpacing=0 cellPadding=1 width="100%" border=0><TBODY><TR><TD style="PADDING-LEFT: 45px">
[FONT=Trebuchet MS, Verdana, Tahoma, Arial]<!-- google_ad_section_start -->...but I have found (in general) over time that the temp method works fine for typical street use of the car...
By the way, the only spec given in the factory manual on the pressure method is based on temperature anyway, not rpm:
"Oil pressure @ engine temp of 212°f (100°c) = 49.7 to 71 psi (3.5 to 5 kg/cm²)"
Hope this helps! -Mac.
<!-- google_ad_section_end -->
[/FONT]</TD></TR></TBODY></TABLE><TABLE cellSpacing=0 cellPadding=4 width="100%" border=0><TBODY><TR><TD vAlign=top align=left>[FONT=Trebuchet MS, Verdana, Tahoma, Arial] [/FONT]</TD><TD vAlign=top noWrap align=right>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]
[FONT=Trebuchet MS, Verdana, Tahoma, Arial][/FONT]</TD><TD style="PADDING-LEFT: 60px" vAlign=top><TABLE cellSpacing=0 cellPadding=1 width="100%" border=0><TBODY><TR><TD align=left>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]<!-- google_ad_section_start -->Thanks guys! somehow I knew I couldn't get away with<!-- google_ad_section_end -->
[/FONT][FONT=Trebuchet MS, Verdana, Tahoma, Arial][/FONT]</TD><TD vAlign=top align=right>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]March 27 2000, 1:13 PM [/FONT]</TD></TR></TBODY></TABLE><TABLE cellSpacing=0 cellPadding=1 width="100%" border=0><TBODY><TR><TD style="PADDING-LEFT: 60px">
[FONT=Trebuchet MS, Verdana, Tahoma, Arial]<!-- google_ad_section_start -->Deep inside I knew that I shouldn't use 15W-30 on my engine with 60K on it! But I was hoping to use it since Mobil-1 is fully syntetic (it's supposed to hold up much better with heat than mineral based oils) That is why I had tough before that maybe I could get away with it (now, I know I was wrong)
You will not believe how quicker (and nice) my wife's car revs up with the Mobil-1 15W-30.
Perhaps I just was dreaming to do wanders on my 1500...
Thanks again!!! GP<!-- google_ad_section_end -->
[/FONT]</TD></TR></TBODY></TABLE><TABLE cellSpacing=0 cellPadding=4 width="100%" border=0><TBODY><TR><TD vAlign=top align=left>[FONT=Trebuchet MS, Verdana, Tahoma, Arial] [/FONT]</TD><TD vAlign=top noWrap align=right>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]
[FONT=Trebuchet MS, Verdana, Tahoma, Arial][/FONT]</TD><TD style="PADDING-LEFT: 75px" vAlign=top><TABLE cellSpacing=0 cellPadding=1 width="100%" border=0><TBODY><TR><TD align=left>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]<!-- google_ad_section_start -->Why not use Mobil 1 15w50?<!-- google_ad_section_end -->
[/FONT][FONT=Trebuchet MS, Verdana, Tahoma, Arial][/FONT]</TD><TD vAlign=top align=right>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]March 27 2000, 2:18 PM [/FONT]</TD></TR></TBODY></TABLE><TABLE cellSpacing=0 cellPadding=1 width="100%" border=0><TBODY><TR><TD style="PADDING-LEFT: 75px">
[FONT=Trebuchet MS, Verdana, Tahoma, Arial]<!-- google_ad_section_start -->I've been using it in my '87 X for years with no signs of ill effect. This car sees 15-20 autocross events and 3000 miles of street use per year.<!-- google_ad_section_end -->
[/FONT]</TD></TR></TBODY></TABLE><TABLE cellSpacing=0 cellPadding=4 width="100%" border=0><TBODY><TR><TD vAlign=top align=left>[FONT=Trebuchet MS, Verdana, Tahoma, Arial] [/FONT]</TD><TD vAlign=top noWrap align=right>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]
[FONT=Trebuchet MS, Verdana, Tahoma, Arial][/FONT]</TD><TD style="PADDING-LEFT: 90px" vAlign=top><TABLE cellSpacing=0 cellPadding=1 width="100%" border=0><TBODY><TR><TD align=left>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]<!-- google_ad_section_start -->Mac, your book differs from mine...<!-- google_ad_section_end -->
[/FONT][FONT=Trebuchet MS, Verdana, Tahoma, Arial][/FONT]</TD><TD vAlign=top align=right>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]March 27 2000, 2:31 PM [/FONT]</TD></TR></TBODY></TABLE><TABLE cellSpacing=0 cellPadding=1 width="100%" border=0><TBODY><TR><TD style="PADDING-LEFT: 90px">
[FONT=Trebuchet MS, Verdana, Tahoma, Arial]<!-- google_ad_section_start -->My factory owner's manual shows the following:
minimum below 5 deg F = SAE 10W
minimum between 5 deg F and 32 deg F = SAE 20W
minimum above 32 deg F,max to 95 deg F = SAE 30
minimum above 32 deg F,max > 95 deg F = SAE 40
min between 5 deg F & 32 deg F, max > 95 deg F =
SAE 15W/40
This is why I felt safe with 15W/50 Mobil 1<!-- google_ad_section_end -->
[/FONT]</TD></TR></TBODY></TABLE><TABLE cellSpacing=0 cellPadding=4 width="100%" border=0><TBODY><TR><TD vAlign=top align=left>[FONT=Trebuchet MS, Verdana, Tahoma, Arial] [/FONT]</TD><TD vAlign=top noWrap align=right>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]
[FONT=Trebuchet MS, Verdana, Tahoma, Arial][/FONT]</TD><TD style="PADDING-LEFT: 105px" vAlign=top><TABLE cellSpacing=0 cellPadding=1 width="100%" border=0><TBODY><TR><TD align=left>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]<!-- google_ad_section_start -->well well well !<!-- google_ad_section_end -->
[/FONT][FONT=Trebuchet MS, Verdana, Tahoma, Arial][/FONT]</TD><TD vAlign=top align=right>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]March 28 2000, 9:35 AM [/FONT]</TD></TR></TBODY></TABLE><TABLE cellSpacing=0 cellPadding=1 width="100%" border=0><TBODY><TR><TD style="PADDING-LEFT: 105px">
[FONT=Trebuchet MS, Verdana, Tahoma, Arial]<!-- google_ad_section_start -->That's interesting!
Gilles, I never intended to make you feel "wrong" - in fact, this is a highly subjective decision so I don't know wether it is even possible to be "wrong"... ?
I was just giving my personal opinion, which is that I would be concerned the 15-30 oil would act too thin in such hot climates. Again, this is just my opinion, not "the word" carved in stone...
Mark, regarding your input on this thread, what is the climate like where you live?
About your owner's manual info, if you look closely at the numbers it is not a big difference from the numbers given in my shop manual. Yours seems to mainly give SAE values though, while mine lists variable-weight values.
Honestly I think there is some margin for flexibility here. It would probably not kill you Gilles to try the oil if you wanted to, I really was just trying to say that I would probably not. Again, though, that is just my personal view - nothing absolute
<!-- google_ad_section_end -->
[/FONT]</TD></TR></TBODY></TABLE><TABLE cellSpacing=0 cellPadding=4 width="100%" border=0><TBODY><TR><TD vAlign=top align=left>[FONT=Trebuchet MS, Verdana, Tahoma, Arial] [/FONT]</TD><TD vAlign=top noWrap align=right>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]
[FONT=Trebuchet MS, Verdana, Tahoma, Arial][/FONT]</TD><TD style="PADDING-LEFT: 120px" vAlign=top><TABLE cellSpacing=0 cellPadding=1 width="100%" border=0><TBODY><TR><TD align=left>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]<!-- google_ad_section_start -->My climate is different<!-- google_ad_section_end -->
[/FONT][FONT=Trebuchet MS, Verdana, Tahoma, Arial][/FONT]</TD><TD vAlign=top align=right>[FONT=Trebuchet MS, Verdana, Tahoma, Arial]March 28 2000, 2:52 PM [/FONT]</TD></TR></TBODY></TABLE><TABLE cellSpacing=0 cellPadding=1 width="100%" border=0><TBODY><TR><TD style="PADDING-LEFT: 120px">
[FONT=Trebuchet MS, Verdana, Tahoma, Arial]<!-- google_ad_section_start -->Temps run between 40deg F and 90deg F during "Sports Car Season". But, I would think at higher temps you would not want to go to a thinner oil. Keep in mind, this is a personal opinion based on very little scientific fact
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