Got a bit more info , QA1 list in their service guide that they use a 5W oil . Their own brand .
I see little to lose and at least I am learning . Even wztching QA1 online video doesnt seem too hard for what I want to do

Tex

New best ET 10.259@129.65 .
New best MPH 130.32
Finally fitted a solid cam,
stepped it up a bit more
3690lbs through the mufflers
New World block 3780lbs 10.278@130.80 . Wowser 10.253@130.24 footbraking from 1500rpm
Power by Tex's Automotive