I took the ole Z out for a spin to a car cruise tonight and well i drove it about 10miles to the cruise and then I get to a stop sign where it starts idling really low and loses oil pressure. Im assuming the low oil pressure is just because im losing idle, it seems like it might cut out if i let it go down, it gets around 500rpm.

This used to happen when i was at the track and after id run it and let off to pull in to get my time slip, it would get down around 500 and then id have to give it some gas before it cut out on me. After that, I changed the O2 sensors last season and it started to get better, but now its back to the same thing. I did put about 2 gallons of race gas in it last season once, that wouldnt have made them go bad would it?

Anyone have any ideas?

 

The only way the gas will affect or o2s will affect your oil pressure is if your running to rich and fuel is getting in your oil. Its normal for it to drop when at idle or getting warmer. If your on the throttle and you loose oil pressure you have a problem. What did the gauge read? Might want to change your oil.