Date: Wed, 15 Sep 1999 07:39:12 -0400
From: "Eric Law" <>
Subject: Re: 900 16v, Noisy, Help wanted

Sounds to me like there's something funny going on in schoolbus-land! In my career as an owner of a bunch of used cars, and a sometimes european-car mechanic, I've probably switched 100 or more cars to synthetic, with mileage ranging from 20,000 to 250,000. I've never seen anything close to a severe problem doing this. What I have seen: Higher oil consumption/leakage, presumably because the synthetic flows more easily. Mainly affects engines that had pre-exsiting problems. Increased valve-lifter noise. Can't quite figure out why this is, one theory is that the synthetic "breaks loose" existing dirt in the motor and it finds it's way to the lifters. What I have also seen: Increased gas mileage. Not huge, usually 2-3 MPG. Easier starting when cold. Reduced engine wear. I've got a couple of 900 turbo motors in the garage with > 200K miles, you can still see the hone marks in the cylinders, and all the bearings meet "new" specs. Longer turbo life. Bottom line: synthetic is all I'll use in any of my motors, right down to the lawnmower. And transmissions, diffs, etc. where appropriate. Eric Law <> wrote in message news:7rmisn$86t$ > In article <>, > wrote: > > Dear Malcolm, > > A change of oil will probably help if the stuff in there already is > >old and poor quality. If you put in a good synthetic like mobil1 and > >there is > > You know, the Tech's I've talked to have told me NOT to use mobil one in > a vehicle that hasn't used it from day one. They went into all the > reasons, but I can't remember them. One told me how he used to work on > school buses and when they switched to Mobil1, the motors kept blowing > on them. They went through five school buses before they figured it > out. > > > Sent via > Share what you know. Learn what you don't.

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