Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84 exptools; site ihwpt.UUCP Path: utzoo!watmath!clyde!burl!ulysses!mhuxr!mhuxt!houxm!ihnp4!ihwpt!rjz From: rjz@ihwpt.UUCP (R. Zurawski) Newsgroups: net.auto.tech Subject: What motor oil should I use? Message-ID: <561@ihwpt.UUCP> Date: Mon, 11-Nov-85 23:02:01 EST Article-I.D.: ihwpt.561 Posted: Mon Nov 11 23:02:01 1985 Date-Received: Wed, 13-Nov-85 07:15:45 EST Distribution: na Organization: AT&T Bell Laboratories Lines: 30 The other day I took my car in to one of those 10 minute oil change places. I asked for 10W-40 oil. The guy who was servicing my car said that I should be using 10W-30. I was surprised by his suggestion. I thought that 10W-40 was an all season motor oil. He told me that 10W-40 oil was going to be phased out in about two years (by the oil makers) and that I should use 10W-30 all year round since I have an aluminum engine. He said that lately most auto manufacturers suggest 10W-30 for all year care. He suggested that I may want to use an oil like 15W-50 during the summer since I do a lot of highway driving, but 10W-30 was O.K. Also, the 10W-30 oil that they used was rated SE-SF-CC. I never heard of this rating. Questions: 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? Please kept the following in mind as you answer: I have an aluminum engine, I drive about 15,000 miles a year, 75% of my driving is at highway speeds (60+) and I live in the midwest. Thanks in advance. Bob Zurawski ...!ihnp4!ihexp!rjz