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Re: synthetics

Sargent Schutt wrote:
> Bill wrote:
> >Hello qlisters,
> >About two months ago I decided to change the trans, differential and
> >engine oil in my car to synthetics. ...I am getting
> >about 1mpg increase with the change to synthetics, up to 26mpg around
> >town. I highly recommend changing to synthetic. Thanks for the
> >information.
> Bill,
> It would be interesting to compare your engine oil consumption over the
> next few months with your pre-synth days. I made exactly the same
> changes as you on my 91 200q about 5k miles after I bought it, and noted
> that with the change to synth my car started burning oil (1/2 qt per 4k
> miles). Since then I've switched to dyno engine oil (20/50) and have
> noticed less oil consumption. This all due to the detergent effects of
> the synth engine oil.
But were you useing a 20W50 synthetic?
> In the tranny, I originally put in Mobil 1 
Bad move. Mobil 1 is a GL-5, even Mobil says don't use it in a
> ( at143k miles, made an
> improvement), then recently changed to Redline - BIG improvement in
> shifting with the Redline. I highly recommend it.
> Anyway, keep me posted (the list) as to the change in oil consumption
> levels (if any) you see in the coming month or so.
Make sure it's the same grade oil like 20W50 dyno to 20W50 synthetic.

1990 CQ