<VV> Multi-grade vs. 'straight weight' oil????????????????????????????????????????????????????????????????????????????????????

[Matt Nall]

Where is Richard's paper on this? Apparently I need to brush up, right Matt?

Charlie

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chaz.. you originally asked:



As I remember, Corvairs required 'straight weight' oil, 30W or 40W, and
multi-grade was taboo?

Was it an 'urban legend' or was it true that, when 'generic' mechanics put
multi-grade oil in Corvairs, that the engine heat would break the oil down
and cause lack of lubrication and overheating ?

Today's multi-grade oil is better, but is it OK to use it in a Corvair?  I
look for single weight, but it's harder to find.

Charlie

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  The  Corvair owner's manuals...published in the 60's....   specify  Multi- grades as well as straight weights...


Hard to believe so few have ever read their manuals..


Richard Widman's  papers are on his  Website!


I found this just now by searching for " richard widman oil"




[PDF] 



Selection of the Right Motor Oil-draft 15

www.widman.biz/uploads/Corvair_oil.pdf
File Format: PDF/Adobe Acrobat - Quick View
Selection of the Right Motor Oil for the Corvair and other Engines. By Richard Widman. This is the fifteenth draft of this paper. It had been two years since the last ...



Richard's Corvair




www.widman.biz/Corvair/English/English.html
Richard's Corvair ... machinery in Bolivia, or want calculators, oil charts ...



[PDF] 



GL-4 and GL-5

www.widman.biz/uploads/Transaxle_oil.pdf
File Format: PDF/Adobe Acrobat - Quick View
The Difference between GL-4 and GL-5 gear oils. 1 of 11. The Difference ...




















Matt Nall
Charleston, Oregon
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