I am in a straight betwixt two...........I JUST bought my 95 SC400 with 124k and all of a sudden it is sputering and hesitating and running like trash!!! Anyone know the problem? It started about 10-15 miles after putting 15 bucks of gas in (93 oct). That could be related, not sure. Dealer hiding something possibly also. I just filled the gas tank and also put in some Heet (takes out water in gas lines/tank) and also some fuel injector cleaner. Another posibility (i hope it is this), for the first time it is below freezing and the tank was empty during the chilly weather outside all night. could have froze the line somewhere, maybe. Anyone know?