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#4714522 - 04/02/18 08:21 PM ATF in an engine
dgunay Offline


Registered: 12/05/14
Posts: 555
Loc: Toronto
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#4714528 - 04/02/18 08:27 PM Re: ATF in an engine [Re: dgunay]
69GTX Offline


Registered: 09/23/15
Posts: 3742
Loc: Connecticut
Why would ATF with a thin detergent pack be much better at cleaning an engine than regular 20 grade motor oil with a strong add pack? Even MMO added to your regular motor oil would be a better cleaner as MMO has real solvents and is even thinner than ATF which is around a 10 grade oil in most cases. Both are thin oils being mixed with your engine oil. MMO is under a 5 grade if I recall. Safest thing to do is to run a motor oil with a strong add pack known for cleaning up things....such as some of the major brand synthetics.
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#4714541 - 04/02/18 08:40 PM Re: ATF in an engine [Re: dgunay]
i_hate_autofraud Offline


Registered: 05/19/16
Posts: 697
Loc: Canada

I'd think ATF would start to burn in the cylinders and leave residue behind, plus thin ATF does not
help to support main bearings, etc and would likely increase wear!

If you want to 'clean out' an engine, use a cup of kerosene, let the engine idle for 20 minutes
and do an oil filter change!

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#4714545 - 04/02/18 08:43 PM Re: ATF in an engine [Re: dgunay]
spasm3 Offline


Registered: 05/30/10
Posts: 8414
Loc: North Carolina
There is nothing in ATF that cleans better than proper motor oil. It does not have friction modifiers or significant zinc so its not going to help your triblo layer. It lowers the viscosity and dilutes the add pack of the oil. No real detergent level vs motor oil.

This has been covered before, for one stubborn poster.

https://www.bobistheoilguy.com/forums/ubbthreads.php/topics/4660239/1


Edited by spasm3 (04/02/18 08:45 PM)
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#4714548 - 04/02/18 08:48 PM Re: ATF in an engine [Re: dgunay]
nascarnation Offline


Registered: 04/30/04
Posts: 809
Loc: Indiana
But in the good old days, when ATF contained a lot of sperm whale oil, I think this myth was born and refuses to die nearly 50 years later.

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#4714549 - 04/02/18 08:48 PM Re: ATF in an engine [Re: dgunay]
TheLawnRanger Offline


Registered: 03/18/18
Posts: 105
Loc: Mississippi
Why would the Bureau of Alcohol, Tobacco, and Firearms be cleaning engines in the first place? Do they not have enough to do?
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#4714554 - 04/02/18 08:54 PM Re: ATF in an engine [Re: dgunay]
NormanBuntz Offline


Registered: 07/27/13
Posts: 2012
Loc: Outer Banks, NC
The narrator could get a job as a carnival barker.
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#4714569 - 04/02/18 09:09 PM Re: ATF in an engine [Re: dgunay]
Hammehead Offline


Registered: 03/31/18
Posts: 44
Loc: Right there
Naphtenic base oils and aromatics are great to clean, because of high solvency characteristics. Parafinic oils being group I, II, III or even Group IV PAO bases are weak in solvency, so they need detergents or esters to help. High solvency bases like naphtenic based oils doesnīt need detergents, thatīs why itīs naive to look for detergent content in its VOAs or UOAs of low performance mineral atfs.
Low performance ATF (not synthetic) still have about 20% of naphtenic base on its composition, according to Ninas a base oil producer of Stockholm, Sweden. So a Type A atf or event a Type F, can clean an engine better than a Dexron VI (group III mostly) or better fluid made from group III or higher bases.
You can clean an engine with a Johnsons baby oil also, because of its pale naphtenic oil composition, plus a little alcohol and essence, right?
laugh
item 3.3 ATF Bases at:

https://www.engnetglobal.com/documents/pdfcatalog/NYN001_200412073535_Base%20oil%20handbookENG.pdf


Edited by Hammehead (04/02/18 09:25 PM)
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I used to use syn, now whatever is on sale and never had problems. This noob knows stuff.

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#4714571 - 04/02/18 09:14 PM Re: ATF in an engine [Re: dgunay]
gathermewool Offline


Registered: 01/09/09
Posts: 5878
Loc: New England
OP:

1. What's your opinion or are you just trolling?

2. Why list all of the cars you've sold in your sig? You've got to be out of signature space by now, right?
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#4714633 - 04/02/18 10:32 PM Re: ATF in an engine [Re: dgunay]
MoreCowbellAz Offline


Registered: 02/05/15
Posts: 312
Loc: Phoenix, Az
Sincere question: I've heard for some time that ATF's have very low detergents, which I assume to be true. With that in mind, why the nasty sulfur-ish odor they all seem to have? Obviously there's a bunch of something in there that regular motor oils don't seem to have.
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#4714640 - 04/02/18 10:39 PM Re: ATF in an engine [Re: dgunay]
Hammehead Offline


Registered: 03/31/18
Posts: 44
Loc: Right there
SMELL OF DISPERSANTS, AND THAT DOESNīT SHOW IN OIL ANALISES. Caplocks on, sorry.
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#4714643 - 04/02/18 10:50 PM Re: ATF in an engine [Re: dgunay]
dwendt44 Offline


Registered: 05/17/06
Posts: 3928
Loc: Central Wisconsin
Quote:
But in the good old days, when ATF contained a lot of sperm whale oil, I think this myth was born and refuses to die nearly 50 years later.


The old wives tale, at least in part, was because ATF was red
as was MMO and some low effort thinkers thought that they both
would work well at cleaning.
ATF isn't designed to burn like motor oil or motor oil additives.

My 2Ē
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#4714649 - 04/02/18 10:53 PM Re: ATF in an engine [Re: dgunay]
David2431 Offline


Registered: 01/28/18
Posts: 25
Loc: Missouri
Old guy here - I'm in my 60s, FWIW - had a 1967 Mercury Cougar I bought in 1970. Around 40,000 miles on it. It had a loud ticking sound coming from the valve train. A Ford mechanic advised that I should do an oil change and substitute a quart OF ATF in place of engine oil. I did that. Sound went away instantly and never came back.

I was an 18 year old kid.

What did i know then? What do I know now? I know I saw it and believe it worked.

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#4714652 - 04/02/18 10:59 PM Re: ATF in an engine [Re: gathermewool]
dgunay Offline


Registered: 12/05/14
Posts: 555
Loc: Toronto
Originally Posted By: gathermewool
OP:

1. What's your opinion or are you just trolling?

2. Why list all of the cars you've sold in your sig? You've got to be out of signature space by now, right?


1) Do I look like trolling? I just wanted to share something oil related and informative. I've seen worse (not even car related) topics here in BITOG and nobody complains about it.

If you are really curious about my opinion (which I doubt), no need to reinvent the wheel. Engine oil belongs to the engine, transmission fluid belongs to the transmission. I'd probably use Seafoam, both in oil pan and fuel tank at the same time, prior to the oil change to clean out the engine.

2) Because my backspace key won't work wink . Those are the most recent ones, and still missing (except the Pontiac). Two Hondas on the list were my project cars. I am thinking of updating the list in the near future though.
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#4714666 - 04/02/18 11:25 PM Re: ATF in an engine [Re: dgunay]
gathermewool Offline


Registered: 01/09/09
Posts: 5878
Loc: New England
Posting links to debunked myths is akin to trolling. Nail in the coffin: you only posted a link, with no input.

Maintain a questioning attitude, dude.
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Castrol Edge 0W-40 + Fram Ultra (FU) filter
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Edge 0W-20 + Subie blue filter

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