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Date: Thu, 15 Nov 2001 22:57:45 -0500
From: DanB <>
Subject: Re: USing Sythetic Tranny  Lube

Wow - I think the advice to not mix synthetic and mineral based might really be worth listening to. I have had great experience with RedLine MTL in my C900. But I switched it when new and I didn't go back and forth. Maybe switching in the summer is a factor too? I swear RedLine is the only way I could get it to shift reasonably when it's cold (SAABs transmissions in this vintage were'nt usually known for their smooth operation). In fact it makes it so good that it works even better than my local Japaneese tranny (a Mazda) when cold. My pinion bearing is lasting pretty well (178K), the dealer said there is some noise coming out of it but not that bad yet. I had them listening because I was sure I was hearing timing chain and they convinced me that it was the AC compressor. I had a SAAB club recommendation to put this stuff in that old 900 is why I did it. I wouldn't do that on a 9-3, because it shifts SO much better. Someday I'll have to buy one. -Dan KeithG wrote: > From Saabnet and Townsend, in a C900, if there is gear lube in the > transmission, continue to use gear lube. If you want to switch to synthetic > gear lube, you may have a bit more seepage from the old seals. If it has > only had regular dino engine oil (10W40 was stock), you can change to > another synthetic engine oil or regular engine oil. Do not put gear lube in > the tranny if it has engine oil in it now or you will not be able to go back > without a disassembly. Gear lube smells of sulphur. If you use synthetic > engine oil, you may see more seal seepage, though I did not. I was able to > enjoy a bit better shifting with the AmsOil Series 2000 20w50. this is what > is recommended by Townsend for maximum pinion bearing life. > > The other link is down, but is on the service page and under major service. > It outlines his personal experience with different lubes and average life in > miles. as always YMMV > > KeithG > > "David Haydon" <> wrote in message > news:oBiE7.44904$ > > don't do it! If it ain't broke don't fix it..... > > I'm talking from bitter experience here, I put Redline into my 9k Carlsson > > hoping to improve the shifting and ended up having to rebuild the tranny > > within a month due to the pinion bearings giving up. It was only after > this > > that I found a few Saab sites on the web warning not to switch - I wish > I'd > > seen them before! > > btw it didn't make any noticeable difference to shifting either! > > If you do insist on going synthetic make sure you flush out all of the old > > mineral - I know it hurts to throw away that expensive synthetic oil, but > > even relatively small percentage contamination with old mineral will not > do > > you any favours. > > David > > QuasiMotors has a nice piece on how to do it in a 9k > > > > not to mention a section on don't do synthetic.... > > > > "Eric Durkee" <> wrote in message > > news:9re8cq$p70$ > > > Hi All, > > > > > > I'm thinking about running synthetic lube in the manual transmission on > my > > > 1993 900S. It looks like the shop manual that I have says don't use it, > > yet > > > all of the synthetic lubes say "100% compatible". > > > > > > Is anyone running synthetic? Would it cause problems with the > > sychronizers > > > or anything else? > > > > > > I'm thinking about AmsOil, the blue stuff. Hoping to improve gas > mileage, > > > better > > > cold shifting, etc. I have 105000 miles on the car. > > > > > > Thanks for you input, > > > > > > Eric > > > > > > > > > > > > >

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