Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83; site aesat.UUCP Path: utzoo!aesat!hal From: hal@aesat.UUCP (Hal Patnaik) Newsgroups: net.auto Subject: Graphite in Mobil 1 oil Message-ID: <244@aesat.UUCP> Date: Mon, 8-Oct-84 16:44:27 EDT Article-I.D.: aesat.244 Posted: Mon Oct 8 16:44:27 1984 Date-Received: Tue, 9-Oct-84 09:14:07 EDT Organization: AES Data Inc., Mississauga Ont., Canada Lines: 44 I seem to be a bit confused here. Does Mobil 1 have graphite in it or not? According to Karren Hettinger (see article below) there IS graphite in Mobil 1. Could someone please explain whether there is or is not. And if there is, what is its purpose, and whether or not is is harmful for the engine? 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? Here is "kitten"'s article: > From kitten Thu Oct 04 21:35:59 1984 > Subject: Mobil One, graphite-based oils > > ...I know of someone who had bad experience with Mobil One ... He > [said] he had used it in three or four different cars. ... He > found upon inspection after using the oil for various lengths of > time in the different cars that ALL suffered extreme wear damage, > caused by the graphite in the oil. (P.S. If I recall correctly, > all the cars saw at least one oil change.) > > As I understand it ... the graphite flakes are supposed to form a > layer between metal parts. ... What had happened instead is that > the graphite *caused* friction between the metal parts, and since > I understand graphite to be a somewhat hard compound, it caused > scratches in the metal. All I can figure is that: > > 1) the graphite flakes did not lay flat between the metal parts > as intended, or > 2) the graphite was not in a flake form, and acted as would metal > fragments suspended in the oil. > > Karen Hettinger Any comments would be appreciated... Hal Patnaik {allegra,ihnp4,linus,decvax}!utzoo!aesat!hal AES DATA, Inc. Bus: (416) 821-9190 x. 364 1900 Minnesota Crt. Home: (416) 844-1607 Mississauga, Ont. CANADA