Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 (Tek) 9/26/83; site tekig.UUCP Path: utzoo!watmath!clyde!burl!ulysses!mhuxj!houxm!vax135!cornell!uw-beaver!tektronix!tekig!davidl From: davidl@tekig.UUCP (David Levadie) Newsgroups: net.auto Subject: OBOY!!! an OIL debate!!! Message-ID: <2294@tekig.UUCP> Date: Mon, 8-Oct-84 14:50:39 EDT Article-I.D.: tekig.2294 Posted: Mon Oct 8 14:50:39 1984 Date-Received: Tue, 9-Oct-84 04:15:18 EDT References: <239@pertec.UUCP> Organization: Tektronix, Beaverton OR Lines: 16 I have been told just the OPPOSITE - that ASPHALT based oils, Havoline in particular, are superior because they "break down" (become less viscous) at higher temperatures than the "other" oils. I HAVE noticed that the oil pressure in my 49 Chevy drops LESS when the motor is hot if I am running Havoline, than is the case with Valvoline (Throw rocks here). So, which kind is Mobil's regular old 30W ? I used to run that before my redneck friends threatened to disown me for not running Havoline. I run Torco MPZ50 in my 650 Yamaha, and have found that it lives up to the ravings of the MANY motorcycle maniacs who recommend it - it really hangs right in there... but, then... it IS 50-weight, and it DOES cost $2.50 a can... Anybody know the TRUTH about Castrol ?