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Old 7th November 2019
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Default Motor Oil Engineering Test Data: Facts, not Myths/ oils ranked

Motor Oil Engineering Test Data

Since it will take you days to read this independent compilation of data, facts, and tests, I'll skip to #64 in the rankings which is the #1 rated 20w50. Then you can see where your oil ranks in comparison.


64. 20W50 Valvoline VR1 Racing Oil, conventional = 97,677 psi
This oil claims high zinc/phos.
zinc = TBD
phos = TBD
moly = TBD
It was tested Summer 2019. The psi value above, produced by this oil, came from testing it at the normal operating water-cooled engine test temperature of 230*F, which put it in the OUTSTANDING Wear Protection Category. But, this oil is way too thick for most any water-cooled engine. However, it is ideal for air cooled engines, which cannot control their oil temperatures well. And it is popular with air-cooled Harley Davidson Motorcycle Owners. So, for their benefit, I also tested this oil at the much higher test temperature of 275*F.

At that elevated temperature, any hotter and thinner oil is expected to experience a drop in Wear Protection Capability. But, this oil only had a very small 3% drop in capability. And even at that elevated temperature, it produced 94,850 psi, which still kept this much hotter and thinner oil in the OUTSTANDING Wear Protection Category.

I also tested this oil to find out its onset of thermal breakdown, which was an impressive 285*F.
__________________
05 1200/1250C/Hammer 570 Cams/E1 clutch kit +15% spring
TC88A Gunner's V00D00 map/DCPR7E/Taylor Pro 8mm
S&S Premium Lifters/KhromeWerks HP Plus 3" slip ons
HSR42 25 pilot 2 turns Y8 needle jet 97 needle 2nd groove 170 main
Dragtron II AC K&N filter/VR1 20W50/Spectro 85wt Primary Oil
Max torque 87.7@4400rpm/max hp 86.8@5600rpm


Last edited by 60Gunner; 4 Weeks Ago at 06:35..
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