03-10-2024, 06:09 AM

PontiacLars PontiacLars is offline

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Join Date: Feb 2021

Posts: 102

Oil viscocity 5W50

I will use Vavoline VR-1 racing oil in my engine. 3" mains and 2.2" rods.
Bearing clerance .0030-.0032 mains and .0028 rods.
Valvoline has this oil in 20W50 and 5W50. I dont really like how thick
20W50 gets in the spring and fall. Any reason not to run 5W50 instead?
Sounds like a perfect compromise, but it has such a big viscocity spand that I get suspicious.

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