Yeah, tried it synthetic in our current 97 XJ and the puddles got bigger! On my 96 it had a drip from the rear main. I switched to Penzzoil synthetic cause it used to be over a $1.00 a quart cheaper then Mobile One. Anyway, in the 96 I switched to synthetics at 50k and within a 1,000 miles the rear main seal stopped leaking!!! I had it for about another 4 years and 50K and it never leaked again. I'm 500 miles short of 40K on my 04 WJ and it's getting switched over to synthetic when it hits 40K. I hope to keep it for a very long time. Love the thing. It gets 15-16mpg in town, 19-21mpg highway, V8, lots of fun to drive too. Of course when gas gets about $4 a gallon I'll probably be reconsidering it...maybe not. -- Mark Price Morgantown, WV 1969 AMC Rambler, 4.0L, EFI, T-5 2004 Grand Cherokee Laredo, 4.7L, Quadratrc II " Chronic Pain Hurts" -------------- Original message ---------------------- From: Frank Swygert <farna@xxxxxxx> > I can tell you this much -- if your car is using a bit of oil it will DRINK > synthetic! _______________________________________________ Amc-list mailing list Amc-list@xxxxxxxxxxxx http://splatter.wps.com/cgi-bin/mailman/listinfo/amc-list