Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 Fluke 8/7/84; site fluke.UUCP Path: utzoo!watmath!clyde!burl!ulysses!mhuxj!ihnp4!drutx!houxe!hogpc!houti!ariel!vax135!cornell!uw-beaver!microsoft!fluke!vince From: vince@fluke.UUCP Newsgroups: net.auto Subject: Re: Mobil 1 oil Message-ID: <1481@vax2.fluke.UUCP> Date: Fri, 19-Oct-84 15:05:52 EDT Article-I.D.: vax2.1481 Posted: Fri Oct 19 15:05:52 1984 Date-Received: Sun, 21-Oct-84 15:20:04 EDT References: <244@aesat.UUCP> <1396@ihuxl.UUCP> Organization: John Fluke Mfg. Co., Everett, WA Lines: 34 >> Also, if synthetic oils are so wonderful, why do most >> manufacturers warn that they will not stand behind their >> warantees if you put synthethic oil into your engine? > Easy. They are VERY conservative. Petrol-based oil is well-known. > They KNOW how it works, they know how their engines will react to it. > Synthetics are a relative new-comer. Their properties aren't so > well-known. They may be better, they may be worse. Maybe they're > better (than conventional oils) for some engines but worse for others. > They haven't had time to test them sufficiently to trust them. > Sticking with conventional oils is safe, so that's what they do. Synthetic oils are not as new as you may have imagined. A friend who is an aviator informed me that synthetic oils have been used in planes for ages (I think he said decades). Synthetic oils (which brands I don't know) are approved by both the FAA and aircraft engine manufactures for use in most if not all aircraft. This is a VERY CONSERVATIVE industry. If there were any doubt at all about its reliability, it would not be approved. I was certainly impressed by this fact before I began using Mobil 1 in my car. I am convinced that most cases where synthetics are discouraged are because of ignorance or because of alterior motives (would like to sell you more service). Perhaps if there are some fellow netters out there who know more about the aviation end of things, how about filling us in? Craig Johnson uw-beaver! \ John Fluke Mfg. Co., Inc. decvax!microsof! \ Everett, Washington ucbvax!lbl-csam! > fluke!vince allegra! / ssc-vax! /