I would run synthetic in the weight the manufacturer recommends 5/30 or at
least a 50/50 blend. I wouldn't out-guess VW as they did extensive testing.
OTOH, I see posts on the Miata.net website with guys saying that they run
10/30 motor oil in their trannys because that's what Honda recommends. What
those dolts don't realize is that the Miata tranny needs the additives for
proper action of the synchros, shear, design of the cut of the gears, and
what not. Some dolt always thinks they're smarter than the manufacturer. If
Mazda thought it best to run 10/30 in the trannies they would have said
that. They're just TooFckingCheap to buy Redline at $8 per quart.
Mike
----- Original Message -----
From: "Daniel E McHatton" <hallosb@juno.com>
To: <datsun-roadsters@autox.team.net>
Sent: Sunday, April 07, 2002 2:13 PM
Subject: OT Audi 1.8T Motor Oil Question
> Rob's message on the Skoda got me thinking about something that has
> always bothered me about my girlfriend's VW Passat. It has a 1.8 Turbo
> Audi engine in it and the owner's manual recommends 5W-40 or 5W-30 oil.
> I can easily locate 5W-30, but have never found 5W-40 anywhere. I live
> in the high desert of Arizona (not nearly as hot as Phoenix, but still
> hot). I was thinking of running 10W-40.
>
> Why would the manufacturer suggest a multiweight oil on the lower end of
> the scale?
>
> Doesn't a Turbo engine generate more heat?
>
> More heat would suggest heavier weight oil, right???
>
> Dan McHatton
> Sierra Visa, AZ
> '66 1600
>
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