I work in an R&D lab for a company that manufactures machinery for producing glass bottles. The glass hits the machine at about 1900 degrees we work with all types of lubricants and the general rule of thumb is, if the oil isn't carbonizing because of excessive heat than conventional petroleum based lubricants are used. The synthetics were developed primarily to overcome heat problems. I believe that the oil company marketing departments have done a good job in convincing people that they are neglecting the machinery they love if they are not using " The Best". I have to agree with Robert, I change oil every 1000 miles and use the drain oil in the thing I dislike the most and the damn thing (my lawnmower) won't die! Gary V. ............................................. To unsubscribe go to http://www.sayegh.org/unsubscribe.htm .............................................
