GC 2600

[Dan the roofer]

Hi all hope everyone is staying safe!
I changed the oil on my 54 inch mid mount mower and my 2360 front mount snowblower and I used the permatran 821 xl to refill. Is this ok?
Thanks.
Danny.

 

[MF RED in MT]

Hi Danny,

I cannot help you with any fluid information about your 54" mid mower because I only have a brush hog for my mowing.

The MF 2360 Snowblower takes AGMA 5EP extreme pressure oil, SAE 80W90 gear oil or equivalent, which you will find at the bottom of page 21, at the bottom of this post.

The MF Permatran 821XL is for the transmission/hydraulic system of your tractor.

KC

Below is Page 20 & page 21, "Maintenance" for the MF 2360 Snowblower manual I have from 2009:

 

[irvingj]

On both the MMM and the blower... Yeah, that's a gearbox, and needs gear oil (GP 90, etc).

Hydraulic fluid, if that's what you put in, is far too lightweight. Get it out of there.

 

[ray66v]

On both the MMM and the blower... Yeah, that's a gearbox, and needs gear oil (GP 90, etc).

Hydraulic fluid, if that's what you put in, is far too lightweight. Get it out of there.

Actually, the hydraulic transmission fluid and the 80W-90 gear lube, are about the same viscosity.

The transmission fluid, and the gear oil are measured on two different scales. So, people tend to mistakenly believe the gear lube is thicker.

Viscosities vary widely by brand, but both are about 30W on the motor oil scale.

Both products are in fact, light weight gear oil. The big difference between them is the additives.

The transmission oil doesn't just have to protect the transmission gears, it also has to operate the hydraulics, and the brakes. So, it has additives for all those to work better too.

The hydraulic transmission oil is designed to work in gear boxes like the front differential, or a gear box. But, those hypoid gears are best protected by EP, (extreme pressure), rated gear lube, that's what it was specifically designed for.

Look for that EP designation when you chose your product. Not all gear oil is rated that high.

ATTACH=CONFIG]653390[/ATTACH]

 

[DMW]

Strictly speaking, specialized gear oils are better at what they do. Permatran is a GL4 rated fluid, also a suitable gear oil. GL4 will not have the same EP additive package as the gear oil, generally it will not last as long.
Would I use THF in the gear boxes? Why not. Just include them in the scheduled maintenance with other fluid changes on the tractor (hydro/front axle).

The best reason to go to a heavier gear oil is if the seals start weeping. The higher viscosity gear oil will either solve the problem, or reduce it enough so that it can be ignored for another couple years.

 

[MF RED in MT]

ray is correct, my tractor manual says "MF Permatran lll" for the front axle recommended lubricant on page 53.

This is what I have chosen to use since my first change out of fluids in my MF tractors front axle, my MF snowblower, and my Woods brush hog is Amsoil's Synthetic 80W-90 Gear Lube.

Page 53, of my 2009 MF tractor manual is attached below:

KC

View attachment Page 53 Tractor Manual.pdf

 

[Dan the roofer]

Thanks guys, I guess I should have asked before I did the deed! I had figured since the call for the permatran in the front diff that it was good to use as gear oil. I realize it is a thinner oil but I figured with what they charge for it it would be magical or something�� I appreciate the info. K.C. You came through once again!
Danny.

 

[ray66v]

Thanks guys, I guess I should have asked before I did the deed! I had figured since the call for the permatran in the front diff that it was good to use as gear oil. I realize it is a thinner oil but I figured with what they charge for it it would be magical or something�� I appreciate the info. K.C. You came through once again!
Danny.

The Permatran is NOT thinner. See my last post.

Most hydraulic transmission oil is about 30W on the motor oil scale, (exception being the Kubota fluid). That means it is about the same viscosity (at normal temps) as the 80W-90 gear oil.

I would leave the Permatran in there now. It works just fine. Change to the gear oil next time.

 

[Dan the roofer]

The Permatran is NOT thinner. See my last post.

I would leave the Permatran in there now. It works just fine. Change to the gear oil next time.

Thanks ray, I did read your post but only after I wrote mine , I hadn’t noticed other people had responded. I will leave the permatran for the season. I’m not in the garage now but I’m anxious to read the bottle tomorrow to see if it has an ep rating. I do have confidence that it is fine to use as gear oil because that’s what it does in the tractor as you said. The front diff and the transmission have gears under extreme pressure so it’s essential performing the same function as a gearbox.
Thanks for your input.
Danny.

 

[irvingj]

As usual, Ray, thanks for the education!

I have, per the manual, used hydraulic fluid in the front axle, though with some reservations, but can't say that I've had any problems with that. Always GP90 in the gearboxes of the blower & MMM, but had no idea hydraulic fluid was so similar and could be used.

Learn sump'n new every day.