My opinion (and yes, I have a bellybutton too): That Texaco commercial from a few years ago was accurate. Synthetic oil really does not volatilize and produce sludge as much as natural crude based oils. Modern chemisty really can make a better molecule. But do our old AMC engines really need the better molecules? I don't know. But I do use Castrol Syntech in my 2000 Silverado and have used it since the first oil change. 158,000 mile so far. Engine runs like new. John Elle said (among other things): The oil is > too light, the > engines are being worn out. > One mans opinion. > John. > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > http://www.amc-list.com/pipermail/amc-list/attachments/20070808/3d39fd07/attachment.htm > > _______________________________________________ > Amc-list mailing list > Amc-list@xxxxxxxxxxxx > http://www.amc-list.com/mailman/listinfo/amc-list > _______________________________________________ Amc-list mailing list Amc-list@xxxxxxxxxxxx http://www.amc-list.com/mailman/listinfo/amc-list