Wow, only 5 psi! I've got the Canton 3 qt unit on my LS3 powered C5 Z06 and I run it pretty hard in HPDE. I don't data log but I'm unaware of any oil press issues. I'm assuming that you're running that beautiful Chevelle in your profile. Are you LS powered? The Canton system is pretty good but make sure you're not masking an underlining problem. I know some of you folks can really make your vehicles dance on the Auto X course but it's for such a short time I wouldn't think that oil press would drop to the level you mentioned.