Oil viscosity

Wow, spark plug and oil conversations within a week. Anyone up for fuel octane levels, trans lube type, K&N air filters, stock vs modified, FI vs carbs? The forum is lighting up! Love it. :)
 
Chris in Canada said:
just wondering what the general consensus is for oil viscosity here? Stock ‘81 engine, daily summer driven, mostly Hwy!!
Thanks
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Recently I started using 10W30 Castrol high mileage stuff on my tired 186K kms fuel injected engine - for 28 years before that I used Castrol GTX 10W40. This year I bought some Joe Gibbs Driven 15W50 oil and will run it for the season.

Ideally a motor oil with ZDDP for flat tappet engines (which the Joe Gibbs is, it's non-synthetic). My opinion anyway. Anything in Canadian Tire - 10W40 or 10W30 conventional oil, you're good to go.
 
Is Castrol still made from castor bean oil? I'm really asking, no jokes this time. I know that was its origin but I doubt it still is.
 
I run Valvoline VR in my flat tappet cars. It has a higher zinc level than most oils you can buy so hopefully cams etc will live a little longer.
 
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Started using Valvoline in the late 60's up until about ten years ago.
I now use royal purple synthetic.
I still think Valvoline is a good oil just decided to go synth.
10w30 in newer engines but around 90k miles switch to 20-50.
When I traveled years ago I carried extra oil because Valvoline was not on the shelf of most gas station stores so when my son who doesn't know squat about cars started traveling I told him to use Quakerstate.
 
dragonsgate said:
I still think Valvoline is a good oil just decided to go synth.
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I don't recall for certain, but I believe Valvoline's "VR" is synthetic? If so, best of both worlds for old school engines I think...synthetic with wear additives for flat tappets.
 
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