10w30 or 20w50?
#1
10w30 or 20w50?
The factory specs for oil in my 72 U code Cutlass Supreme is 10w30. It has a W30 cam and .030 over bore and just rolled over 101K original miles. With the mods done to the engine, should I stick with factory specs or switch to 20w50? At highway speeds, I get around 50 psi oil pressure, so I was just wondering...
Thanks,
Dave
Thanks,
Dave
#6
Just an Olds Guy
Join Date: Jul 2008
Location: Edmonton, AB. And "I am Can 'eh' jun - eh"
Posts: 24,525
Nice. That stuff isn't readily available up here. I'd have to use a different product like Lucas for Classic cars. Runs about $55 for 5 quarts up here. I hope you're not using a Fram oil filter. They're the cheapest least protective filter on the market.
#7
No sir ..Napa Gold😀
#8
The factory specs for oil in my 72 U code Cutlass Supreme is 10w30. It has a W30 cam and .030 over bore and just rolled over 101K original miles. With the mods done to the engine, should I stick with factory specs or switch to 20w50? At highway speeds, I get around 50 psi oil pressure, so I was just wondering...
Thanks,
Dave
Thanks,
Dave
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