oil is very dirty- I bought the car used so I have no idea what mainterence (if any) was done previously

2001 HYUNDAI ELANTRA
197,000 MILES
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RIEBED
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Hi, is it true that to thoroughly clean out engine from dirty oil use, that I can run a quart of tranny fluid in it for about 1/2 hour before I change the oil?
Nov 24, 2011 at 2:08 PM
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RASMATAZ
  • Experienced Mechanic
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You can do that -I use tranny fluid a lot to cleanse it out-
Nov 24, 2011 at 2:40 PM
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RIEBED
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Thanks for response
Nov 24, 2011 at 2:49 PM
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WRENCHTECH
  • Experienced Mechanic
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I don't advise doing any kind of flush like that to a dirty engine if it has sludge in it. That is OK for an engine that is basically clean but has a stuck valve or something like that but if the engine is sludged, that sludge will loosen up and get caught in places where it can do a lot more damage than it is doing now. ATF has virtually no lubrication properties and you can do some serious engine damage experimenting with that stuff.
Nov 24, 2011 at 3:02 PM
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