<VV> Oil temperature?

Jay Maechtlen jaysplace at laserpubs.com
Mon Oct 23 01:04:27 EDT 2017

On 10/22/2017 8:18 PM, Matt Nall via VirtualVairs wrote:
> Chevrolet said that max safe Corvair oil temp was 280F.
> Bob Helt
> =============================================================
> And as far as I have read... Modern oils  MUST withstand sustained temps over 240 F   for OVER 24 hours....
> Matt Nall
> Charleston, Oregon
> http://tinyurl.com/The-Corvair-Patio
> http://tinyurl.com/Matts-Tech-Pages

short answer from that article:
A quality conventional motor oil will tolerate oil sump temperatures of 
up to 250 degrees, but starts breaking down over 275 degrees. The 
traditional approach is to try to hold oil temperatures between 230 and 
260 degrees.

I don't know what Chevrolet was thinking re 280 degrees - maybe that 
normal oil change would be ok if it didn't get that hot too long or too 

And - you do want to know the hottest temp the oil gets to, 'cause 
that's where it will be breaking down, right?
It might also be nice to know the temp going into the bearings, as that 
would tell you something, maybe...

Jay Maechtlen
'61 2-dr modified w/fiberglass skin,
transverse 3.8 Buick V6 TH440T4 trans

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