i know there are a million threads on this topic...but i feel like my instance is a little different and hopefully you guys can help me out. so over the winter i had my motor rebuilt...came back looking great running great everything is awesome it made 575 on the dyno but leaked a tad bit of oil from the valve cover....so i fix that and put it in the car so now its spring time and i start it up and now ive got oil shooting out of my dipstick. and the oil is starting to look funky...i run e85 so this is a first for me. im pretty sure its the e85 in the oil but its freaking me out. what would cause this blowby. the only thing that is different that i can think of from the dynotuner is the headers, and oil cooler. ive got a sandwich adapter between the oil filter and block. and lines come out of the adapter for the cooler...could that be a problem. i dunno i guess im just confused on why it would do it now...any help would be greatly appreciated...yes i have a breather on it lol

 

It sounds like blowby to me. Yep, alcohol will do that.
If you're just going to be doing some idle & part throttle for car shows, then run some pure 87 octane in it and you won't have to change your oil so often.
It sounds to me like you haven't run an alcohol motor before. Is that the case?

 

yessir first time...but i only took it out once and the oil looks like this? this much blowby is ridiculous there has got to be a way to fix this thing haha im just ready to drive it