I just changed the oil after 20 passes and its really clean. I use Brad Penn's green oil and after letting it sit I can see a very light fog of meth contamination. I'd just like to get it set up so it's really consistant. It warms up fast with the lean out pulled, and will steadily climb once I push it back at 150 degree's (to around 165). My problem is that one pass we'll run a 7.78 and an hour later we'll run a 7:73 (with very close 60'- 1.103 to 1.106). I've heard once you get the tune up set, the car will be killer but untill then... trial and error.