Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site bonnie.UUCP Path: utzoo!watmath!clyde!bonnie!saf From: saf@bonnie.UUCP (Steve Falco) Newsgroups: net.auto.tech Subject: Re: What motor oil should I use? Message-ID: <622@bonnie.UUCP> Date: Wed, 13-Nov-85 08:14:08 EST Article-I.D.: bonnie.622 Posted: Wed Nov 13 08:14:08 1985 Date-Received: Thu, 14-Nov-85 00:41:42 EST References: <561@ihwpt.UUCP> Organization: AT&T Bell Laboratories, Whippany NJ Lines: 20 > 1) What is this rating SE-SF-CC? > 2) Is it true that 10W-40 will be phased out? > 3) Is 10W-30 safe to use ALL year round? > 4) If the answer to number 3 is "no", what oil should I use? 1) I believe SE and SF are gasoline engine ratings while CC is a diesel rating. In all cases it refers to the durability and lubrication capability of the oil. The auto manufacturers recommend a classification to use. For example, in '79, Chevy said use SE or better. They said don't use SE/CD (does anyone know if SE/CD is different from SE-CD??) 2) I have seen notices that GM no longer recommends 10W-40, they are switching to 10W-30. I don't know why. I also doubt that 10W-40 will become unavailable. 3) Again, check with the manufacturer. My Chevy can use 10W-30 most of the year but there are different recommendations for extreme climates. Steve Falco