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Unread 10-30-2013, 01:46 PM   #1
Rproject
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Heard a rumor - is it true?

I heard a rumor about dropping 1qt of trans fluid in with an oil change, running it for 500 miles then changing the oil again to clean internal engine parts - especially lifters. Is this a tried and true practice?

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Unread 10-30-2013, 01:50 PM   #2
Siva283
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Yes it works pretty well but dont run it to hard during that time. All you really need to do is get it up to operating temp and run it for a about 15 minutes then drain and refill while warm. You would be amazed at the crap that will come out. You will also be amazed at the leaks you get that were preveiously plugged up by the gunk.
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[QUOTE=Magnum;14117863] I gave the Jeep the required offering of $$, sweat, and blood, and everything works fine now. -- Jim[/QUOTE]

[QUOTE=ldso;16498409]. It started with a $200 axle, and a few thousand dollars later I was done :)[/QUOTE]

[QUOTE=Luuca;16122017]diagnose the real issue before you start going all Obama on it - spending mad cash you'll need for other important things.

Ask me how I know...[/QUOTE]

[QUOTE=Overhead;17658665]this is also my second set of RC springs this year. I'd rather spend the money again and get something that will last.[/QUOTE]
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Unread 10-30-2013, 01:54 PM   #3
Tom95YJ
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Quote:
Originally Posted by Siva283 View Post
Yes it works pretty well but dont run it to hard during that time. All you really need to do is get it up to operating temp and run it for a about 15 minutes then drain and refill while warm. You would be amazed at the crap that will come out. You will also be amazed at the leaks you get that were preveiously plugged up by the gunk.
I can agree with running for 15 minutes and the leak part my 95 leaked like the titanic after doing it
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Unread 10-30-2013, 01:55 PM   #4
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I wouldn't do that old school crap. Modern oil has all the additives and detergents you would ever need. Just change the oil - frequently if you feel the need.

You never see engines clogged up with sludge like you did in the old days, except for the totally neglected few.

In olden days, oils did not clean up sludge like they do today. Likewise, ATF isn't the same as it was in olden days, which is not a good thing in this case.
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Unread 10-30-2013, 01:56 PM   #5
SeanB95YJ
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I've heard of it being done

What I USED to do myself, back in the day before all the higher detergent oils and the synthetics and "high milage formulas" were around... with a high milage motor, I'd drain about a quart, then pour in a quart of kerosene... start and idle for about 10-15 min, then drain. refill with 1 quart of Rislone treatment and balance with either 10w30 or 10w40. amazed at all the crap the kerosene would flush out.

these days I just drain completely and use a high milage formula 5w30 in my wife's car (2001 Toyota).... and the Jeep (with an '85 350) gets 15w40 Rotella (high zinc content = better for the older motors)
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Unread 10-30-2013, 02:01 PM   #6
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There are quite a few engine flush products on the market if you're trying to clean up a really dirty engine. Even Amsoil has one.

Personally I wouldn't use those either, except as a last resort in an engine that I might have to replace anyway. JMHO.

Quote:
Originally Posted by SeanB95YJ View Post
...amazed at all the crap the kerosene would flush out.
I would ask myself, was it better to break all that crap loose, or would it be better to let sleeping dogs lay?
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Unread 10-30-2013, 02:01 PM   #7
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My goal is to see if my tick is the old 4.2 tick or do I have a stuck lifter.
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Unread 10-30-2013, 02:07 PM   #8
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I run seafoam through my engine once a year. Put it in the oil get it up to temp run at idle for 15 mins drain and refill. I also put half a can through the brake booster hose shut of and let sit for 15 mins start it up and watch the smoke show.
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1995 YJ. 2 inch BDS Spring lift. 1 inch shackle lift. 1.25 inch JKS Body Lift 33x12.5x15's. Engo 10,000 pound winch.

[QUOTE=Magnum;14117863] I gave the Jeep the required offering of $$, sweat, and blood, and everything works fine now. -- Jim[/QUOTE]

[QUOTE=ldso;16498409]. It started with a $200 axle, and a few thousand dollars later I was done :)[/QUOTE]

[QUOTE=Luuca;16122017]diagnose the real issue before you start going all Obama on it - spending mad cash you'll need for other important things.

Ask me how I know...[/QUOTE]

[QUOTE=Overhead;17658665]this is also my second set of RC springs this year. I'd rather spend the money again and get something that will last.[/QUOTE]
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Unread 10-30-2013, 02:12 PM   #9
SeanB95YJ
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Quote:
Originally Posted by bpounds View Post
I would ask myself, was it better to break all that crap loose, or would it be better to let sleeping dogs lay?
I see your point, but this was the mid-80s and the vehicles I was doing this on were anywhere from 65s to 79s, mostly small 8s, a couple big 8s and one 6.... just about every vehicle I owned in those times had 150k or more without any internal work and still ran beautifully when I got rid of them. While it's not uncommon to get 150k+ out of a post-90s motor, that was quite a feat for those older motors. I went by past personal experience.

but like I said - I don't do that anymore... just not needed with todays (mostly) better formulations on the market
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Unread 10-30-2013, 05:21 PM   #10
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Quote:
Originally Posted by SeanB95YJ View Post
back in the day before all the higher detergent oils and the synthetics and "high milage formulas" were around... with a high milage motor, I'd drain about a quart, then pour in a quart of kerosene... start and idle for about 10-15 min, then drain. refill with 1 quart of Rislone treatment and balance with either 10w30 or 10w40. amazed at all the crap the kerosene would flush out.
Ha! you must be old like me. Haven't heard Rislone talked about in years. I had a bug eyed Sprite I ran Rislone in. Anybody still use it? I've had good luck with Mystery Oil
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Unread 10-30-2013, 05:31 PM   #11
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That's a quick and dirty trick to flush the engine, but as noted 1) don't run it that way for long and 2) there are better products specifically engineered for that purpose (Seafoam etc).
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Unread 10-30-2013, 05:34 PM   #12
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Mystery oil, or diesel fuel
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Unread 10-30-2013, 05:55 PM   #13
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Sea form saved my engine. Fuel, intake, and lower end. Clean as a pin now without disassembly
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Unread 10-30-2013, 06:01 PM   #14
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I bought a 99 firebird a couple months ago for cheap. It had a bad exhaust job and you couldn't hear anything but the exhaust. All fluids looked good but once I had the exhaust fixed I could hear the tick in the engine. Dumped some sea foam down her and ran the engine for 30 minutes at a time. Changed the oil and filter and I swear I have never seen so much crap come out of a filter. Going to run the sea foam thru it a couple more times for about 300 miles each time to clean the rest out.
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Unread 10-31-2013, 05:43 AM   #15
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+1 to the sea foam stuff works wonders, i put in my gas oil and thru the intake
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