Using Oil that is too thin????
Cargo Master
Joined: Oct 2003
Posts: 2,833
Likes: 4
From: Jefferson, Iowa
I have always ran 10w-30 mobil in my 78 F-100. Should I switch to 5w-30, i live in central iowa, usual starting temps are about 10 F in the winter. Does rotella produce a 10w-30 for my diesel?
Post Fiend
Joined: Jun 2001
Posts: 5,228
Likes: 5
From: Running Springs CA
Originally posted by TallPaul
BTW, would not a 5w30 be another Black Death oil in the earlier days? I think it has about as much VIIs as 10w40.
BTW, would not a 5w30 be another Black Death oil in the earlier days? I think it has about as much VIIs as 10w40.
I notice that in my '94, 10w-30 is preferred for the 5.0 and 5W-30 for all the other gasoline engines. Since there is no difference in clearances, I conclude that the higher-revving 5.0 must have sheared out 5w-30 in testing.
Jim
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BainbridgeBrewer
1973 - 1979 F-100 & Larger F-Series Trucks
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Jul 19, 2016 07:08 AM
