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Synthetic Oil as an engine flush? (Synthetic oil caused lifters to go bad)
Hi John,
Can you explain this further? How does synthetic oil clean out all the
gunk left by normal oil? Assuming it cleans out all the gunk, how long
does it need to circulate to clean it out? an hour, 10 miles, a 1000
miles? It sounds like synthetic oil would be a gentle flushing agent and
would not harm the engine.
What I've haven't heard about engine flushes is that the flush (usually
kerosene) does not really ever leave the engine and that the flush needs to
be flushed! What has been your experience here?
Why is going to a 30 weight synthetic oil a no no at 60k miles without a
flush?
My engine has 110K miles on it now. How should I know if it needs to be
flushed?
Thanks for responding to all these questions!
Glenn
86 cgt
---------------
>The key here is the 60K mark. Synthetic oil will clean out all the gunk
>left by normal oil.
>And what weight oil did he change to. 30 is a no no at 60k miles from
>normal oil to
>synthetic without an engine flush.
>
>John
>1990 QC
At 01:11 PM 6/8/97 -0500, you wrote:
>Glenn Kaufman wrote:
>
>> What kind of evidence do you have for the synthetic oil causing the
>> lifters
>> to go bad? Has anybody else heard of this?
>>
>> At 09:32 AM 6/10/97 -0400, you wrote:
>> >Is it advisable to use synthetic oil in this Audi? I have a '90 80q
>> that
>> I switched over to Mobil 1 at 60K miles and it caused my lifters to go
>> bad.
>> After replacing all of the lifters and switching back to "real" oil
>> and
>> changing at 3K intervals, I haven't had another problem.
>> >
>
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