Quote:
Originally Posted by zeroomega
I sometimes overfill the oil by 0.3qt during oil change, because the dipstick is just not very accurate. I didn't see any noticeable difference in logged oil pressure. I did't try 0.5qt overfill since it is not very far from 0.3qt. I am hesitate to go for 1 qt overfill. If someone tried it on the track with logged pressure and UOA please let me know.
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I don't blame you. I too would be hesitant to go +1 quarts on track. You're adding to the probability that oil will overwhelm the PCV vents if lateral loads are high enough. On a moderately modified car that doesn't have a significant increase in power output, likely not an issue.