Well, I switched to straight 30W oil, (I let the old stuff drain overnight. Lots of crap came out.) Took the Imp for a drive today and things were fine for about 9 miles, and then the lifter started clacking again. I shut it down and let it cool awhile. Started up and it was still a little noisy, but then the noise faded away and she was running great. She ran great most of the way home, but I have to climb a hill. Once again the lifters started clacking, and bingo -oil light flickered on. Had to shut her down. Let it rest a bit, started up noise went away and she ran fine. Idles beautifully in the driveway. No, I didn't hook up a pressure gauge. ( I guess I will have to get one.) Yes, I did try some oil detergent additive (against Dick Benjamin's advice. I have used it before and it did work.) However, I did notice that there was some oil on the front of the transmission housing. Could this be a rear oil seal leak? If so how major of a job is it to fix?) Thanks in advance for more help. (I'm afraid that if this ends up being a big deal, I won't be registering for Carlsisle any time soon.) Or, driving the Imp. :( Dan Wing Marcy, NY USA imp1983@xxxxxxxx ________________________________________________________________ The best thing to hit the internet in years - Juno SpeedBand! Surf the web up to FIVE TIMES FASTER! Only $14.95/ month - visit www.juno.com to sign up today!