dino to synth - Turbo problems?

[Brendan K. Walsh]

Mark,
When i bought my subi it had been run for the previous 80k on dino, no
problems from the previous owner etc... on my few initial changes i stuck
with the dino, but after some research switched it to synth at roughly 100k.
It was recommended that i flush the motor before hand to help ease the
transition, ie get all the crap out before putting in the synth. I thought
the oil was dirty after a normal oil change, but I've never seen anything
like what came out of my motor after flushing it the first time. My thought
is that without flushing some of thos deposits would have come loose
eventually anyway and caused some real problems. If your gonna switch flush
the motor at least once before you do(if not twice judging from the
mileage), Gunk makes a good one. takes ten minutes to run through then drain
the old, put in the new.  I think its in a silver can. I changed every 3k
for the first couple times then every 5k or so after that.
Regards
Brendan
----- Original Message -----
From: <mark.e.woodland at gsk.com>
To: <quattro at audifans.com>
Sent: Tuesday, January 20, 2004 8:06 AM
Subject: dino to synth - Turbo problems?


> Greetings,
> After following the recent thread on bulk synthetics, I was ready to take
> the plunge on Max, the '87 5KTQ w / 268k (all dino miles)., as I'm still
> adding 1000 miles a week, and the oil change intervals have stretched.
> On doing some local inquiry I was told the horror story of a guy that
> switched over on his S**b Turbo, only to have the detergent action of the
> synth loosen up some deposit or another, and sieze the turbo. Scared me
> enough to continue with the dino, but I am curious to know if anyone else
> has any similar horrors to share.
> What would be the suggested time or mileage to change the oil filter after
> the transition to synth, assuming that the synth had just pulled a lot of
> deposits out of the engine?
> Thanks,
> Mark
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