Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site voder.UUCP Path: utzoo!watmath!clyde!bonnie!akgua!sdcsvax!sdcrdcf!hplabs!nsc!voder!kevin From: kevin@voder.UUCP (Kevin Thompson) Newsgroups: net.auto Subject: Re: Synthetic Oils/Pennzoil in Mazda Rotary Message-ID: <463@voder.UUCP> Date: Fri, 12-Oct-84 21:34:18 EDT Article-I.D.: voder.463 Posted: Fri Oct 12 21:34:18 1984 Date-Received: Sun, 14-Oct-84 08:12:16 EDT References: <166@maxvax.UUCP> tpvax.395 <365@houxb.UUCP> <445@voder.UUCP> Organization: National Semiconductor, Santa Clara Lines: 20 (The piston engine goes: boing, boing, boing...) I've had several people ask me why I don't use Pennzoil motor oil in my Mazda rotary. About 5 or 6 years ago I read an article about Mazda's motor oil recomendations and how they recomended oil with a low ash count. Well, Pennzoil had a rather high ash count (I don't remember if it was just under or over the maximum limit) so I switched from Pennzoil to Castrol GTX. As I recall the possible problems with high ash content oils is that they could foul up the oil injection system and possibly gum up the apex seals, I've never heard of this happening though. -- Kevin Thompson {ucbvax,ihnp4!nsc}!voder!kevin "It's sort of a threat, you see. I've never been very good at them myself but I'm told they can be very effective."