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Old 11-16-2012, 08:38 AM   #1 (permalink)
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Default Engine flush w/ ATF

Don't know why this was so hard to find when searching the thread. Anyway, want to flush the engine while doing oil change today, which I've never done before. Am I ok to use about 6 qts of ATF? How long do I run it w/ the ATF? Anything specific to know when draining the ATF out? Thanks guys.
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Old 11-16-2012, 08:53 AM   #2 (permalink)
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OMG NO!!!!!!!!!!!!!! DON'T DO THAT!!!

If you really want to flush with ATF (I'll warn you know there is a large contingent on here that are... very vocal about their disapproval of using ATF as a flush), you add 1QT to the oil existing in your engine, idle for 20 minutes, and then drain everything.

Straight ATF will kill your engine in short order.
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Old 11-16-2012, 09:20 AM   #3 (permalink)
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Oh, ok. Must have gotten that advice from the Audi forum I frequent when working on the car. Maybe I'll just upgrade to Rotella. Thanks!!
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Old 11-16-2012, 10:37 AM   #4 (permalink)
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I ran my 1996 disco on straight ATF. No problems. I wouldn't drive it across country like that, but I ran it for 20 minutes or so and then drained it and replaced it with cheap-o wal-mart HD 15w40 farm tractor oil. I drove it like that for a few days or so and then changed the oil and filter with good stuff.
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Old 11-17-2012, 09:44 AM   #5 (permalink)
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Quote:
Originally Posted by jafir View Post
I ran my 1996 disco on straight ATF. No problems...
Yeah, no problems in 20 minutes. Unless you tore your motor apart afterwards to inspect all the internal parts, how do you know there were 'no problems'? Who knows, you may have just reduced the life of the engine by 50,000 miles. In reality, you have no idea what you've done to the motor, if anything, and I don't either.


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Old 11-17-2012, 10:55 AM   #6 (permalink)
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I actually did pull a rod cap and main cap later due to what I thought was an oil pressure problem, but I put them back because they were fine.
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Old 11-17-2012, 05:00 PM   #7 (permalink)
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Drain 1qt, replace with atf, drive it like you stole it, drain, replace filter, fill with oil...the ATF will not damage anything in the motor. ATF has the same additives as Seafoam, Marvin's mystery oil, the lucas shit and the 100 other additives with detergents designed as oil additives. I did this with my D2 on most oil changes, when I had to rebuild the motor because of a bad gas/hydro lock in mexico, there was nothing wrong with any of the major components or any unusual signs of wear
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Old 11-18-2012, 05:56 AM   #8 (permalink)
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I have helped 100's of people do an ATF flush with hood results.
Normally the people who bad mouth are the ones who have never done it or don't believe in flushing a system out.
When done right it works quite well.
There are manny companies that make engine flushes, Gunk and 109 from BD are two of the most popular ones to use.
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