Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83; site watdaisy.UUCP Path: utzoo!watmath!watdaisy!gvcormack From: gvcormack@watdaisy.UUCP (Gordon V. Cormack) Newsgroups: net.auto Subject: Re: Oily Question Message-ID: <6704@watdaisy.UUCP> Date: Thu, 4-Oct-84 19:32:25 EDT Article-I.D.: watdaisy.6704 Posted: Thu Oct 4 19:32:25 1984 Date-Received: Fri, 5-Oct-84 04:44:15 EDT References: <147@petfe.UUCP> Organization: U of Waterloo, Ontario Lines: 15 The W in 10W-30 stans for "winter"; they run 2 viscosity tests: the 10 indicates that the oil behaves like 10 in winter and like 30 in summer. While I am at it, the following point has not been made succinctly enough: ALL oils get thinner when hot and thicker when cold. Multigrade oils just do it less so. I will also put in my two-bits' worth on Mobil 1: In about 1977 I put Mobil 1 in a 76 Honda Civic and got atrocious oil mileage (< 100 miles/quart). The consumption went back to normal (>2000 miles/quart) with real oil.