Quote:
Originally Posted by 64speed
I am running VR1 right now because of the flat tapper cam. I hate oil discussions in general but I would like to see a round table on this because 10-30 to me is thin and 20-50 puts me damn near 100 pounds cold. If I could put 15-40 in with a bottle of Lucas additive and feel secure both I and my wallet would be happy as hell.
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In my roller liftered Buick I usually run 4 quarts 10w-30 and one 20w-50. Maybe two quarts 20w-50 when doing a drag and drive where the oil gets extra hot and I'm also harder on the engine. In my OHC, because there are no spinning lifters or rollers, run 4 qts 10w-30 and 1 Lucas Oil Stabilizer, which thickens it up plenty.
I like to see ~40psi at 2,500 rpm, which is basically cruising speed, that's what I adjust too. If I see that 40psi cruising, it'll be at 60psi by 4,000rpm which is plenty. I've not worried about 800rpm pressure because I have a background in Buick's
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"How I learned to stop worrying and love the OHC Pontiac L6"
The Silver Buick- '77 Skylark coupe w/455, SPX, MegaSquirt 3 & TKO-600 (Drag Week 2011, 2012 & 2015!)
1969 Firebird with a turbo'd Pontiac L6 controlled by a MegaSquirt 3 and backed with a microsquirt controlled 4L60e and 4.56 gears! (Drag Week 2018!)