Peak Motor oil ?

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I provide some maintenance for Old World's ethylene glycol unit. I have no idea where they get their oil, but I know that they make Herculiner roll on bed liners as well as Peak antifreeze and some other stuff. I know they treat the employees well, not sure how good they are at making oil. If I run across one of the management people I'll ask about the oil.
 
it is made by warren PP out of nebraska...they make some supertech oil too
 
Viscometric properties for Peak's 5W30 formula are superior to that of Pennzoil conventional. Both 5W30 formulas share a pour point of -39C, but Peak 5W30 has a higher viscosity index and better performance in the NOACK Volatility. From this limited data, I'd say it's a pretty decent oil, and if you can find it, their 5W20 formula looks pretty good too.

You can check out published data for their other forumlas here .
 
Pennzoil YB 5W-30 / Peak 5W-30
Flash Point: 216 / 206
Pour Point: -39 / -39
Viscosity @ 40°C, cSt: 63.9 / 55
Viscosity @ 100°C, cSt: 10.5 / 9.94
Viscosity Index: 158 / 169
NOACK Noack volatility, %: 14.5 / 14.5
HT/HS Viscosity, cP: 3.0 / NA

I'd take PYB.
 
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