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From: spear@ihlpf.UUCP (Spearman)
Newsgroups: net.auto.tech
Subject: Re: syn-oil query
Message-ID: <382@ihlpf.UUCP>
Date: Mon, 31-Mar-86 08:57:25 EST
Article-I.D.: ihlpf.382
Posted: Mon Mar 31 08:57:25 1986
Date-Received: Wed, 2-Apr-86 01:37:12 EST
References: <1979@pur-phy.UUCP>
Distribution: net
Organization: AT&T Bell Laboratories
Lines: 25

> Because there are differences
> in detergents used in different brands of oil, it is important to
> start with one brand and stick with it through out the life of the car.
My understanding is that most major 10w30 or 10w40 are completely
compatible.
> Can anyone on the net point me
> to a source of UNBIASED information on syn-oils and their advantages
> over natural oil. 
This discussion has gone on at least twice in this forum.  The major
points for synoil appear to be its long resistance to breakdown and its
superior performance under extreme operating conditions.  The petro
oil advocates claim that the detergency is the big factor and that it
wears out in synoil as fast as petro oil.  There have also been lots
of stories pro and con about experiences with synoil.  Personally, I
am running Mobil 1 5w30 in my 'new' car and have for > 30K miles
and am very pleased.  My old car is still on Quaker State 10w40 with
much more frequent changes.
> Somehow, I just know this is going to start a debate.
Doesn't everything in this group?

Steve Spearman   ihnp4!ihopb!spear
-- 

Steve Spearman
ihnp4!ihuxm!spear