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Engine oil flushing

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Old Dec 10, 2010 | 08:28 PM
  #1  
TheGreatGazoo's Avatar
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From: Long Island NY
Year: 1989
Model: Cherokee
Engine: 4.0
Default Engine oil flushing

Today at work myself and a few other guys were talking about different methods of flushing your engine. One likes the amsoil flush, another likes having the Wynnn's flush system, another an "old timer" says he always did the throw 2 quarts of tranny fluid in the crank case run for 15 20 minutes then drain and replace filter-new oil.
whats your method?
and cost ?
can you do it at home or take it to a shop?
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Old Dec 10, 2010 | 08:36 PM
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From: The Republic of TEXAS
Year: 1998
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Engine: 4.0L HO
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Frequent oil & filter changes.........don't need a flush.
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Old Dec 10, 2010 | 08:45 PM
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From: Fallbrook,Ca.
Year: 1990
Model: Cherokee
Engine: 4.0L
Cool diesel

what i did on myne i put diesel instead of oil,and unplugged my coil so there be no sparck,and cranked that sucker for a few seconds,did that like 5 times and just let it sit for a while then put the plug and put some 10w30 oil,ran it like that for a day and put some 15w40,shaffer syntec,and my oil is being very clean every oil change,and i do my oil changes every time i see its black.
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Old Dec 10, 2010 | 08:48 PM
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From: Long Island NY
Year: 1989
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Engine: 4.0
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Originally Posted by djb383
Frequent oil & filter changes.........don't need a flush.
sometimes you get a vehicle with 100k plus miles who knows what the last owners did.
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Old Dec 10, 2010 | 09:34 PM
  #5  
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From: The Republic of TEXAS
Year: 1998
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Engine: 4.0L HO
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Originally Posted by TheGreatGazoo
sometimes you get a vehicle with 100k plus miles who knows what the last owners did.
Remove the oil fill cap and take a look before u buy.....u can easily tell what the previous owner(s) did or didn't do.
Attached Thumbnails Engine oil flushing-003.jpg  
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Old Dec 10, 2010 | 09:53 PM
  #6  
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From: Long Island NY
Year: 1989
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Originally Posted by djb383
Remove the oil fill cap and take a look before u buy.....u can easily tell what the previous owner(s) did or didn't do.
yours looks GREAT i would defenatly buy one of your cars unfortunatly well maintained vehicles like yours are few and far between
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Old Dec 10, 2010 | 10:01 PM
  #7  
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Year: 2000
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I have used amsoil flush on a 98 Cobra.

Just don't feel comfortable using of ATF ..lol
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Old Dec 10, 2010 | 10:19 PM
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peep's Avatar
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From: Ontario, Canada
Year: 1989 Laredo
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Engine: 4.0 L 6 Renix
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Definately a good dose of snake oil. Squeeze two medium Garters out completly, and a dash of Mississauga Rattler. Run immediatly for minimum of 10 miles. Drain and Refill. That snake oil is always a cure all. Or just change your oil and filter regularly, it will clean itself up.
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Old Dec 11, 2010 | 05:47 AM
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From: In the middle of Minnesota!
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Unless your engine is really gunked up, an oil flush is NOT necessary. Remove the valve cover and what you see will quickly tell the story.

If you are concerned about prior maintenance, frequent oil changes with good oil and a good filter will slowly and safely clean your engine.

BTW, I have heard of using 1 quart of ATF, but I would never use 2.
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Old Dec 11, 2010 | 07:48 AM
  #10  
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From: milwaukee wi.
Year: 1993
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Engine: 4.0
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changing the oil but not the filter with trans fluid is doable for a couple days of driving as trans fluid is high detergent Any flush will affect sludge which may be sealing a gasket or holding pressure to a lifter your question should be whether to or not
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