Re: Motor oil in trans
[Re: tscuda]
#158504
11/28/08 05:32 PM
11/28/08 05:32 PM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
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Circle Track
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Lincoln Nebraska
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I remember Marvin the mad(727) scientist from Chrysler Power years ago advocated adding motor oil to the trans for it's improved lubrication qualities even going as far as using all motor oil I have added a qt here & there & no problems mainly because I was out of trans fluid & going by him way back saying that it was Ok.
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Re: Motor oil in trans
[Re: forphorty]
#158507
11/28/08 05:49 PM
11/28/08 05:49 PM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
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It does sound totally ludicrous which is why I had to try it 30 wt would for sure be higher viscosity than atf & if it'd be better(for lube & function) I'd also think Ma would have tried it & used it if it worked better so I dont know...
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Re: Motor oil in trans
[Re: 70dart360]
#158509
11/28/08 06:18 PM
11/28/08 06:18 PM
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Joined: Jan 2003
Posts: 9,436 Blair County,PA
62maxwgn
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Quote:
Quote:
Would you put transmission fluid in a motor?
Yes I will and have, cleans out a nasty set of lifters in a jiffy. Heard of the motor oil in a trans but never tried it. Are you sure thats what it is or just some burnt black tranny fluid?
Might clean out your lifters but I bet it will play h#ll on your bearings.
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Re: Motor oil in trans
[Re: tscuda]
#158512
11/28/08 07:15 PM
11/28/08 07:15 PM
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Joined: Jan 2003
Posts: 25,750 Rio Linda, CA
John_Kunkel
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When the 727 was new and transmission fluid wasn't as sophisticated as it is now many racers ran straight motor oil in the 727, either 10-30 or straight 30 weight.
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Re: Motor oil in trans
[Re: ohiodemon]
#158515
11/28/08 07:53 PM
11/28/08 07:53 PM
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Joined: Nov 2006
Posts: 511 Jasper, Indiana
fastnos
mopar
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mopar
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Was in the Air Force for 20 years, as a Vehicle Mechanic. Most of the larger trucks that had Allison transmissions in them, used 10 Wt (Hydraulic oil). Never had any major failure that I can remember because of the fluid. I know it's not engine oil, but it's along the same lines with different characteristics.
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Re: Motor oil in trans
[Re: RapidRobert]
#158516
11/28/08 10:17 PM
11/28/08 10:17 PM
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Joined: Jan 2003
Posts: 6,816 Alton, IL
Dakota_Don
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Quote:
I remember Marvin the mad(727) scientist from Chrysler Power years ago advocated adding motor oil to the trans for it's improved lubrication qualities even going as far as using all motor oil I have added a qt here & there & no problems mainly because I was out of trans fluid & going by him way back saying that it was Ok.
I have dont this also, I drove 275K miles in my old chevy Z24, and towed a boat during most of its life..
but if yopu trans has black oil in it, it maybe burnt trans fluid..
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Re: Motor oil in trans
[Re: Evil Spirit]
#158520
11/29/08 09:55 AM
11/29/08 09:55 AM
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Joined: Apr 2005
Posts: 220 Bellville, Mi.
tscuda
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Quote:
Tranny fluid is a poor lubricant
I would think that too. But why would the factory switch from 90 weight to atf in the manaual trans.
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Re: Motor oil in trans
[Re: tscuda]
#158521
11/29/08 10:20 AM
11/29/08 10:20 AM
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Anonymous
Unregistered
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Anonymous
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Also,put your motor oil in anything but a 904/727 and see how long it lasts.Even Type F is not recommended.
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Re: Motor oil in trans
#158522
11/29/08 10:25 AM
11/29/08 10:25 AM
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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
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The first Fluid Drives that Chrysler made not only used motor oil but it used the same oil as the engine it was attached to, they shared the oil.
While the Fluid Drive wasn't an automatic, per se, it did have a torque converter and other features present in what we call an automatic.
As for switching from gear oil to ATF in a stick, that was done to ease shifting, NOT for durability.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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Re: Motor oil in trans
[Re: Supercuda]
#158523
11/29/08 10:29 AM
11/29/08 10:29 AM
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Anonymous
Unregistered
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Anonymous
Unregistered
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Quote:
The first Fluid Drives that Chrysler made not only used motor oil but it used the same oil as the engine it was attached to, they shared the oil.
While the Fluid Drive wasn't an automatic, per se, it did have a torque converter and other features present in what we call an automatic.
As for switching from gear oil to ATF in a stick, that was done to ease shifting, NOT for durability.
And constant temperatures below 30*.
Manufacturers spend millions on R&D to make things work.Ever wonder why? Another example is power steering fluid.How many use ATF fluid in a power steering pump? It will work but if you want to see the difference,take two clean pumps,run one with each for a year and take them apart.You won't run ATF when you see the difference.
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Re: Motor oil in trans
[Re: Supercuda]
#158524
11/29/08 12:17 PM
11/29/08 12:17 PM
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Joined: Dec 2003
Posts: 5,314 Carstairs, Alberta, Canada
dave571
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Quote:
.
As for switching from gear oil to ATF in a stick, that was done to ease shifting, NOT for durability.
I agree that's part of it, but the thinner oil get's into more places, so it protects better too.
With 80's honda manual transmissions, it was very common to see 5th gear burned out. The Common cause was adding gear oil instead of using the recomended 10w30 motor oil. The gear oil was too thick to make it out to 5th gear. The teeth would disintigrate.
Back to the oil in the auto debate , I remember at auto school (all those years ago) them telling us the base ingredient in dexron was 10w30 motor oil. The rest of it was all detergent, pressure, and heat additives.
It can be debated as to whether engine oil has better lube properites, but how often does an auto trans fail from lack of lube anyway? Virtually never. It is always heat, and lack of pressure that kills autos.
Although I don't think using motor oil is a good idea, I doubt it did any damage. It's just a good reason to go through it now that you know.
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Re: Motor oil in trans
[Re: dave571]
#158525
11/29/08 12:58 PM
11/29/08 12:58 PM
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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
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on the flip side Chrysler changed the spec from ATF to motor oil in some of the FWD 5 speeds, durability reasons were given.
ATF is thin, lack of "shock" ability is part of it's problem. As for autos failing for lack of lube, I have rebuilt more than on Torqueflight that had wear issues with bushings. That wasn't teh failure mode, but it was an issue.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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Re: Motor oil in trans
[Re: tscuda]
#158531
12/01/08 09:47 AM
12/01/08 09:47 AM
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Joined: Jan 2006
Posts: 8,162 USA
360view
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I am working from memory and don't recall all the details but I am pretty sure that Bill Kondolay (of Diesel Trans in Canada) http://www.dieseltrans.com/phpBB/index.phpseveral years ago ran some experiments on 47R automatics comparing Mobil One Syn motor oil (can't remember viscosity) against Chrysler ATF+ (can't remember whether +2 or +3) I have a vague memory that it initially looked promising for Mobil One Syn motor oil but did not work out well in the long run Many years ago I had a good & imformative telephone conversation with an engineer at Universal Lubricants, the makers of the 'Red Bottle' and 'Black Bottle' trans additives about what alternatives would be superior to ATF+2, and this UL engineer seemed confident that Black Bottle additive plus Mobil One Syn ATF was at least as good as +3 Chrysler & Lubrizol laid out the ATF+4 (Type 9602) technical story in a 14 page SAE document (paper# 982674)
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Re: Motor oil in trans
[Re: dulcich]
#158535
12/02/08 11:29 AM
12/02/08 11:29 AM
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Joined: Jan 2003
Posts: 6,816 Alton, IL
Dakota_Don
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Quote:
I use tranny fluid in my engines, motor oil in my tranny's and brake fluid in my power steering, in the appropriate quantities, of course. -dulcich
I use 1/2 qt of 30wt in some of my transmissions..and i have used trans fluid in old dirty engines butt what does brake fluid do in the power steering??
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Re: Motor oil in trans
[Re: Dakota_Don]
#158536
12/02/08 12:23 PM
12/02/08 12:23 PM
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Joined: Jan 2003
Posts: 10,968 Hampton, Ga.
70dart360
Green Meister
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Brake fluid will help keep the seal swollen and soft to prevent leaks. I've used it in a tranny that'd hardly pull before, it worked great for about a week.
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Re: Motor oil in trans
[Re: dave571]
#158537
12/02/08 06:36 PM
12/02/08 06:36 PM
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Joined: Apr 2007
Posts: 871 WA 98043
thecarfarmer
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Quote:
...With 80's honda manual transmissions, it was very common to see 5th gear burned out. The Common cause was adding gear oil instead of using the recomended 10w30 motor oil. The gear oil was too thick to make it out to 5th gear. The teeth would disintigrate....
A low oil level would do the same thing, too. Replaced a couple of 5th gear sets where someone had let 'em get low.
IMHO, running low on oil, hi temp on oil, or over-long intervals on oil is usually worse than using the "wrong" oil.
Quote:
...I was thinking when I seen that that it might have been done to solve a problem. Like how they used to add sawdust to the atf.
I've never heard of putting sawdust in an auto; I know guys would do it to quiet a noisy stickshift, but, I'd imagine that it doesn't do a torque convertor, clutches/bands, front pump, etc. any favors.
I've also put type F into 727's to make 'em apply clutches faster. I even ran a 50/50 mix of straight 30 and type F to crutch years of life out of an AT in a Geo Metro (yeah, baby!) that was starting to slip. The different friction characteristics stopped the slipping for at least three years until I sold the car.
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Re: Motor oil in trans
[Re: tscuda]
#158539
12/07/08 04:45 PM
12/07/08 04:45 PM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
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The saw dust deal was a used car dealer would have their mechanic put it in the rear axle not the trans to quiet one that was noisy.A noisy rear axle in a daily driver will last a long time but the noise would scare away a potential buyer.
live every 24 hour block of time like it's your last day on earth
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Re: Motor oil in trans
[Re: Supercuda]
#158541
12/07/08 06:30 PM
12/07/08 06:30 PM
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Joined: Jan 2003
Posts: 25,750 Rio Linda, CA
John_Kunkel
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Whenever this is debated the seal compatibility issue usually arises but, in the case of Mopar, take a look at the part numbers of some of the internal seals in the steering box and pump; same part numbers for back in the day when ATF was the recommended fluid for P/S and the newer ones that specify P/S fluid only.
The INTERNET, the MISinformation superhighway
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Re: Motor oil in trans
[Re: I go fast]
#158543
12/08/08 06:30 PM
12/08/08 06:30 PM
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Joined: Jan 2003
Posts: 25,750 Rio Linda, CA
John_Kunkel
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A higher detergent fluid might take on a black color after a while but that doesn't mean it's a problem.
The INTERNET, the MISinformation superhighway
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Re: Motor oil in trans
#158544
12/08/08 07:01 PM
12/08/08 07:01 PM
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Joined: Jan 2003
Posts: 11,710 Portage,michigan
B3422W5
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Quote:
Also,put your motor oil in anything but a 904/727 and see how long it lasts.Even Type F is not recommended.
The guy that does my trannies(and is one of the leading performance trans builders in the country , and has been for 30 years)said not to run anything BUT type f in the trannie
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Re: Motor oil in trans
[Re: fastnos]
#158545
12/08/08 11:13 PM
12/08/08 11:13 PM
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Joined: Jan 2003
Posts: 4,062 Fort DODGE, Ioway
origcharger
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Quote:
Was in the Air Force for 20 years, as a Vehicle Mechanic. Most of the larger trucks that had Allison transmissions in them, used 10 Wt (Hydraulic oil). Never had any major failure that I can remember because of the fluid. I know it's not engine oil, but it's along the same lines with different characteristics.
Before the electronic controlled tranny era it was common to use 15W-40 or 30 motor oil in Allison trannys. It was Allison approved oil as long as it was classfied as a "C4" fluid.
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Re: Motor oil in trans
[Re: I go fast]
#158547
12/09/08 03:47 PM
12/09/08 03:47 PM
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Joined: Dec 2006
Posts: 3,533 Indiana
Fury Fan
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I wonder how many of these 'transmission builder experts' that say use this or that but not *this* or *that* have done any true long-term scientific-based testing? I wonder how many of them mix-n-match multiple variables and then pull a conclusion out on the other side???
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Re: Motor oil in trans
[Re: John_Kunkel]
#158549
12/10/08 02:15 AM
12/10/08 02:15 AM
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Joined: Dec 2008
Posts: 176 Rome, GA
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the reason the marv booth guy recommended using some motor oil with ATF was heat related. It would still lubricate at a higher temps when ATF was useless as a lubricant. Seems like he said 16 to 32 oz. depending on how hard the transmission was used. I have put 16 oz. in everything for over 20 years.
'71 GTX w/Air Grabber, Super Trak Pak, Spoiler Pkg. been apart for 22 years, thinking it's time to do something about that....
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