Nomad Willy
Guru
I love FF talking oil.
Never ever had the slightest drop in cranking speed w 30Wt oil in my late model engine and it's spent most of it's time in Alaska. If you don't need it oil is better w/o viscosity improvers just like gasoline is better w/o octane booster ... if you don't need it. And I doubt if anyone on this forum needs it.
Richard I frequently put two quarts of 40wt oil in w the 30wt for oil changes in the summer. Same brand and type of course.
Never ever had the slightest drop in cranking speed w 30Wt oil in my late model engine and it's spent most of it's time in Alaska. If you don't need it oil is better w/o viscosity improvers just like gasoline is better w/o octane booster ... if you don't need it. And I doubt if anyone on this forum needs it.
Richard I frequently put two quarts of 40wt oil in w the 30wt for oil changes in the summer. Same brand and type of course.
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