Originally Posted By: Patman
Originally Posted By: Shannow
Patman,
I'd use the 5W30 any day over the 0W40...
What's the main reason you'd choose the 5w30 ESP over the 0w40 ESP? For me the great thing is it's available right now, while the 0w40 has barely made into any Chevy dealers service bays just yet (despite the fact that it was promised to be widely available there by Feb 1) Definitely on paper it looks like the 5w30 is the better choice, but I'm curious if you know even more info about it Shannow? Is this oil popular down under?
Per OVERKILL, much less apparent VII effect in the 5W30 versus the 0W40....less opportunity for permanent shear.
Higher density in the 5W30 (probably) less volatility also.