Adding a little bit of trans fluid to oil

[dude1116]

Has anyone ever added a small amount of transmission fluid into their oil in order to clean everything out? (Then change shortly after) Someone just told me that they used to do this with their old XJ. Would be curious if anyone has ever done it with the 3.7L and seen results. Essentially it would be the same as Seafoam, if not a little less harsh, right?

Thank all! :cheers:

 

[HoosierJeeper]

I wouldn't. Two different types of lubricatents for two totally different jobs. I'd hate to see the ****** fluid eat up oil gaskets or something. Plus you wouldn't get it all out in one change.

 

[Dave]

Not sure if this would be a good idea. ****** fluid is for trannies.

Also,if you change your oil/filter at regular intervals I don't think you need to put anything else in your crankcase.

Just my thoughts.

Dave

 

[tjkj2002]

Don't use ATF+4 or Ford's type F,will cause extreme wear with all the friction modifiers in those ATF's.

Generally not a good thing anyways since ATF expands,softens,and eats rubber.

 

[k99jk99j]

Not to mention motor oil has 20 times more detergents than atf. Motor oil has to clean up combustion atf does not. So it serves no purpose. Old wives tale.

 

[tjkj2002]

Not to mention motor oil has 20 times more detergents than atf. Motor oil has to clean up combustion atf does not. So it serves no purpose. Old wives tale.

Got it backwards,ATF has about 20 times more detergents then engine oil.

 

[dude1116]

Got it backwards,ATF has about 20 times more detergents then engine oil.

Thats actually why i believe. But i do believe it would eat gaskets. Yeah i dunno who thought of it. Just half a cup full he said.

 

[tjkj2002]

Thats actually why i believe. But i do believe it would eat gaskets. Yeah i dunno who thought of it. Just half a cup full he said.

I used to use it my old carbed engines,though poured in the gas tank(1qt to 25 gallons),better fuel system cleaner then anything on the market but would kill a fuel injected engine pretty quick.

 

[LibertyFever]

I used to use it my old carbed engines,though poured in the gas tank(1qt to 25 gallons),better fuel system cleaner then anything on the market but would kill a fuel injected engine pretty quick.

I can remember pouring a small amount of transmission fluid into a carburetor as the engine was running with the idea that it would "clean" the engine. Sure made a lot of smoke.

I'm nervous about putting an injector cleaner in my gas tank or an additive in my engine oil. If you're wrong then you might find yourself replacing an engine.

 

[TheBlueKJ]

I'm nervous about putting an injector cleaner in my gas tank or an additive in my engine oil. If you're wrong then you might find yourself replacing an engine.

That's exactly how I feel. I got a free thing of Zmaxx from work, it says to put it in the engine oil but I have no idea how it will effect things. SOOO I'm just going to go by my rule of thumb, if you don't know what it does and sounds too fancy and good to be true don't use it!

 

[karljp]

If someone accidentally put a small amount of transmission fluid, I think the engine should be fine. But doing it intentionally, I can't see any benefits.

 

[flair1111]

ive never put it in the oil itself, but i have poured it down my 302 carbed engine as i held it around 3000rpms. nice cleaner and nice smoke show.

id never add anything to my oil. a good synth would do the trick.

 

[u2slow]

I've put seafoam motor treatment on older gas engines before.... not sure if it helped, but certainly didn't do any harm.

XM-5 oil stabilizer is another product some of my colleagues use in their vehicle.

 

[belvedere]

Got it backwards,ATF has about 20 times more detergents then engine oil.

No, you've got it backwards. Little to no detergent in ATF. Dispersants, yes; detergent, no. Don't believe me? Call the tech hotline of your favorite oil company and ask.

 

[belvedere]

Don't use ATF+4 or Ford's type F,will cause extreme wear with all the friction modifiers in those ATF's.

Generally not a good thing anyways since ATF expands,softens,and eats rubber.

Wow, where do you get this stuff? ATF+4 is a highly friction-modified (HFM) ATF, while Type F actually has no friction modifiers. (Dexron is somewhere in the middle.) That's why Type F in, say, a 727TF will provide very firm shifts: no FM, so very little slippage.

Also, whether using a HFM or any other ATF, it will not cause "extreme wear". It just won't provide any benefit in an engine. "Expands, softens, and eats rubber"? Are you kidding me? Ever see O-rings, etc in an auto trans? They don't get "eaten". Sheesh.

 

[tommudd]

I've seen o-rings in trans get eaten before
:mfr_omg:

 

[twack]

:signs1:opcorn:

Wow, where do you get this stuff? ATF+4 is a highly friction-modified (HFM) ATF, while Type F actually has no friction modifiers. (Dexron is somewhere in the middle.) That's why Type F in, say, a 727TF will provide very firm shifts: no FM, so very little slippage.

Also, whether using a HFM or any other ATF, it will not cause "extreme wear". It just won't provide any benefit in an engine. "Expands, softens, and eats rubber"? Are you kidding me? Ever see O-rings, etc in an auto trans? They don't get "eaten". Sheesh.

 

[tjkj2002]

Also, whether using a HFM or any other ATF, it will not cause "extreme wear". It just won't provide any benefit in an engine. "Expands, softens, and eats rubber"? Are you kidding me? Ever see O-rings, etc in an auto trans? They don't get "eaten". Sheesh.

Go to the "HELP" section of any auto parts store,buy one of the old style master cylinder rubber seal(the large one),also buy 1qt of any ATF.Go home and cut that master cylinder rubber seal in half,pour that 1qt of ATF in a old container and put one half of that seal in the ATF,leave the other half beside that container.Let sit for about 48 hours and compare the 2 pieces.


Those o-rings in trans are not rubber.

 

[belvedere]

Guess I thought you were talking about seals in an engine, not a brake system. I must have mis-read the intent of the OP, as to where he was adding ATF. I agree: no ATF for your brake system. (No motor oil, either!) Sorry 'bout that.