I have about 200 miles of GC (Gold) in my wife's '95 SL2 DOHC, about 163K miles total. Used to burn a ton of oil, did one ARX cleaning, this is the first oil in there after the "rinse phase". So far, so good. Very quiet, smooth, good overall. Mileage has suffered a tad initially on this tank (also changed the O2 sensor), but I think I will plan on sticking with GC in this car. I promise to do a few UOA, I just wanted to get the ARX out of the way first.