Do I Really Need GL-1 in my trans ?

[oldshep]

Does a 3053-a really need GL - 1 and not GL-5. Will Gl-5 80-W90 hurt it. My main problem is that I cannot get 80-W90 GL-1 anywhere around Springfield,Mo. Thanks.

 

[jasonjc]

Just make shure your GL5 meets MT-1 and/or is safe for "yellow metals".

 

[oldshep]

Thanks jasonjc. Does anyone know who makes the Mt-1 lube and where i could get it.

 

[jasonjc]

The MT-1 is just a spec.

 

[clinto]

Or, if you want the GL-1, go to any Napa and tell them to order part # 65-205. That will get you a 5 gallon bucket of GL-1.

 

[acetomatoco]

And every tractor supply store in your fine state will have a stack of 5 gallon pails of 90 weight GL1....farm tractors eat it for lunch...

 

[mutt1966]

I've been told that non-detergent 30W is the same as 90W GL-1 anyone know if this is a fact.
Thanks Scott

 

[gringeltaube]

Let me just add another question: With any lube, has anyone ever had problems regarding "yellow metal" (2 synchronizers + 1 counter shaft thrust washer), long before other components needed replacement?
I guess for our 3053s that yellow metal safety story is another case for the myth busters. These trannys tend to get noisy and hard to shift when hot, break teeth out of fifth gear, have 2nd gear seizing on their main shaft journal, after years of abuse start popping out of gear, but…. never die because of the brass of the syncros been attacked/converted/dissolved. At least that’s my experience here, where they use any kind of lube, preferably the cheapest and nobody cares about GL.
Personally I’ve been using Chevron and Texaco 85W90 for many years, without problems.

 

[Valence]

Just make shure your GL5 meets MT-1 and/or is safe for "yellow metals".

Not to be raising a thread from the dead (hey that rhymed) but applicable question here. The GL-5 80W90 gear oil I have does not specifically state it is safe for "yellow" (ie brass etc) metals. However, it does say that it is for use in most manual transmissions. Doesn't most manual transmissions use some form of "yellow metal" synchronizers, and thus, my oil is then "yellow metal" safe?

 

[orren]

I use Lucas as they suggest. Really quiets things down. Use Lucas in everything else, too.

 

[steelandcanvas]

I use Lucas as they suggest. Really quiets things down. Use Lucas in everything else, too.

I'm a strong believer in Lucas also. I have it has an additive in the diffs, t-case, tranny and engine.

 

[M543A2]

We use 80W-90 in standard transmissions and differentials in everything including military trucks with Lucas additive. No problems for all my life with it. I do not know where the yellow metal comments/fear got started. we used the same grade without problems without Lucas or other additives in all the heavy civilian truck transmissions and differentials we worked on in the garage I worked at. I never opened up a transmission and had reason to think the synchros had any signs of damage from the oil such as blackening, pitting, or abnormal wear. If the differential is a positrac do not use Lucas. Use a EP (Extreme Pressure) additive. It comes in a tube at NAPA.
Regards Martin

 

[sandcobra164]

I run 40W Non Detergent Engine oil in my trans and transfer at the suggestion of ¨M35Tom¨ on here. He has a vast amount of knowledge on these transmissions and even offers a taller overdrive kit for the Deuce. I did notice about a 30 degree temp drop on my transfer case after the change in oil. I'm not talking a trip around the block, I'm comparing temps taken after driving 180 miles back from the Rally two different years with similar driving and ambient temperatures and same truck as my constants for the ¨experiment¨. I always check hubs, diffs, trans and transfer case after any run more than 20 or so miles with my infrared. Helps to point to trouble areas before real trouble occurs.

 

[rustystud]

View attachment Scan0044.pdfView attachment Scan0045.pdfView attachment Scan0046.pdf

We use 80W-90 in standard transmissions and differentials in everything including military trucks with Lucas additive. No problems for all my life with it. I do not know where the yellow metal comments/fear got started. we used the same grade without problems without Lucas or other additives in all the heavy civilian truck transmissions and differentials we worked on in the garage I worked at. I never opened up a transmission and had reason to think the synchros had any signs of damage from the oil such as blackening, pitting, or abnormal wear. If the differential is a positrac do not use Lucas. Use a EP (Extreme Pressure) additive. It comes in a tube at NAPA.
Regards Martin

OK Martin you just hit one of my major pet peeves. First, which Technical School did you attend and what additional training have you received to make such a statement as " I do not know where the yellow metal comments/fear got started" . If you had attended any Technical School you would have learned in "lubricants 101" that there is a major difference in oils especially ones that use "phosphorous" or other "Sulfurous" compounds . When someone comes on and says they are a mechanic or implies the same and then starts to spread misinformation that really gets me upset. That is one reason that I support mandatory "ASE" certification for all mechanics. As you can see in the first document it clearly states just what I have said. In the second one it clearly says "Non-synchronized transmissions" meaning that there is a difference for "synchronized transmissions" . The third document states it is "non-corrosive to soft yellow metals" . If there is no difference like you said then why would manufactures state these things ? You must know what oil you are using to prevent damage to your transmissions. Now to be fair most gear oils today do not use "phosphorous" only the "EP" (extreme pressure) oils do. Still there are plenty of manufactures that do make this oil so you must know what you are using.

 

[M215]

I just picked up a 5 gallon bucket of GL1 at NAPA on sale for $54. Our local NAPA stores always have it in stock.

 

[wb1895]

If I remember correctly, Tractor Supply has GL-1 oil in gallon jugs, labeled "Ford Tractor Oil" That is what I used in my M35 transmission

 

[jasonjc]

GL-5 is fine IF, it meets the MT-1 sepc or says "yellow metal safe". Most do, but check, do not assume it does.

 

[M35A2-AZ]

I saw GL-1 and 10w oil at a C.A.L. Ranch store.

 

[RodUSMC1962]

How can 30 weight and 90 weight be the same?We used straight 90 weight oil for all our vehicles when I was in the Corps, jeeps, trucks, m-37`s etc. That was a lot of years ago, but like I said used in m-35`s and nothing else.
.

 

[rustystud]

How can 30 weight and 90 weight be the same?We used straight 90 weight oil for all our vehicles when I was in the Corps, jeeps, trucks, m-37`s etc. That was a lot of years ago, but like I said used in m-35`s and nothing else.
.

Their not the same, they just have the same "lubricity" . The 90w will stay and work under more pressure then the 30w will. The 30w will just get squished out. No holding power like the 90w has. Now that is a simple explanation for a more complex answer, but there is no need to get all technical. No one is giving a test later.