Gear Oil Question

[drjay9051]

Time for the 50 hour on my DK40HST. Not clear on front axle gear oil.

Manual calls for "SAE 90 gear oil or better, or same as T/M oil."

Two questions

By T/M are they referring to transmission? In other words I could use hydraulic fluid?

Secondly i found both 80W 90 and 85W 140. So is 85W 140 "better than" 80W 90? May be a bit thick for north Florida.

Any help is appreciated.

 

[Soundguy]

if your manual is specing 80 or 90w fear oil.. then 80w90 should be fine.

PS. most tractors do not use plain hyd oil in their transmission.. but rather a multi purpose universal oil. UTF fluid etc..

 

[drjay9051]

if your manual is specing 80 or 90w fear oil.. then 80w90 should be fine.

PS. most tractors do not use plain hyd oil in their transmission.. but rather a multi purpose universal oil. UTF fluid etc..

I was referring to tractor trans/hydraulic not straight hydraulic.

Any clue what "... same as T/M oil." is referring to??

 

[Soundguy]

not familiar with your machine or specs so I wouldn't even hazard a guess as to what they are refering to.. that's why I'd stick to what they said previously.. IE. if they called out a gear oil spec.. at leas tthat you know you can dupe.. etc..

 

[dennis52]

I believe MT indicates that it is safe with softer metals
80/90 is ok

Time for the 50 hour on my DK40HST. Not clear on front axle gear oil.

Manual calls for "SAE 90 gear oil or better, or same as T/M oil."

Two questions

By T/M are they referring to transmission? In other words I could use hydraulic fluid?

Secondly i found both 80W 90 and 85W 140. So is 85W 140 "better than" 80W 90? May be a bit thick for north Florida.

Any help is appreciated.

 

[Soundguy]

I believe MT indicates that it is safe with softer metals
80/90 is ok

MT1 is the rating for the safe/yellow metals..

 

[northcreek2624]

My DK40 came with hydraulic oil (tractor fluid) in the front diff. My manual also stated gear oil, so I contacted the factory and they said that I can use either. I went with the hyd. oil to simplify things plus I hate working with and smelling gear oil. This was ten years ago and my front diff has never been apart...Mike.

 

[drjay9051]

My DK40 came with hydraulic oil (tractor fluid) in the front diff. My manual also stated gear oil, so I contacted the factory and they said that I can use either. I went with the hyd. oil to simplify things plus I hate working with and smelling gear oil. This was ten years ago and my front diff has never been apart...Mike.

thanks for info.
I'm thinking the T/M refers to transmission.

 

[Hill Billy Bob]

This chart should clear things up for you. I use Traveller Premium UTF, found at all TSC stores....HB Bob

View attachment Lubricants-Chart-2012-07-20.pdf

 

[o2batsea]

Multi viscosity oils are rated by their SAE weight at cold and at operating temperature. So an 85w 140 acts like an 85 weight in the cold, and when it gets hot it behaves like a 140.
You can use good old straight 90w in the front axle. I find it easiest to fill the axle by taking off the cap on the pivot housing (doesn't matter which side) and pouring it in.
Another trick is to get a pesticide sprayer and fill it with gear oil. You cut the spray end off the wand. After you pump it up, you stick the business end in the fill hole and pull the trigger. It often takes a long time, so you should plan to put a pan under the fill, wire the trigger open and come back every few minutes to pump it and check the level.

 

[drjay9051]

This chart should clear things up for you. I use Traveller Premium UTF, found at all TSC stores....HB Bob

View attachment 374369

Thanks. I am going with the 80w90 per your chart.. Looks like the "T/M" mentioned in my manual is referring to hydraulic/Transmission fluid but i'll stick with the 80w90.

Appreciate the chart.

 

[KiotiKowboy]

I just had this conversation with my local dealer. He recommends the gear oil instead of using the UTF. I'll trust his years of experience.

 

[VictorW]

I put in 80w90 in my CK30hst 9 years and @800 hours ago for it's first 50 hour service. No problems. Hydraulic tranny fluid was drained out from factory. I believe the 85w140 would be to heavy even in your warmer climate.

 

[nc redneck]

Make sure it is GL-5 rated. Most stuff at discount tractor places is GL-1 rated. I have 2 gallons of GL-1 stuff picked up at Tractor Supply I would love to give to someone. I picked it up and 2 buckets of Yellow " universal " tractor fluid to do 1000 hour service. After doing research on specifications I ended up using GL-5 oil in front axel and Kubota Super UTD in trans.
Good Fluid is much cheaper than gears, hydraulic pumps and transmissions. IMO
Scott

 

[Soundguy]

Make sure it is GL-5 rated. Most stuff at discount tractor places is GL-1 rated. I have 2 gallons of GL-1 stuff picked up at Tractor Supply I would love to give to someone. Scott

you MUST be kidding.

gl1-3 products are all but special order!

napa will get it for you but usually no longer stocks it. tsc sells a specific gl1 90 for old ford and fergy trannies.. but it costs more than their generic 80w90 gl5 oil.

all the generics at walmart are gl5 oils.. etc. rural king, in selected locations will have gl1 oil.. but their generic hose brand is gl5

 

[nc redneck]

Warren is the same company that makes the mystery 5 gallon yellow bucket hydraulic fluid with 20 year out of date specifications. AP-1 on left AP-5 on right.

 

[Soundguy]

and your point? I didn't say it was not available ??

it's up to the purchaser to purchase the correct material. not purchase the wrong stuff then blame the botteler..

 

[nc redneck]

Does "Special Order" ring a bell in the memory here !!!!!!!!

 

[Soundguy]

Does "Special Order" ring a bell in the memory here !!!!!!!!

uh? no.. I don't see anyhing in your post mentioning special order.. nor do i see how it would make a difference. special order or off the shelf... neither mean anything.. ig you need gl5 and grab and buy gl1.. there's only 1 party at fault

if you 'special ordered' the WRONG oil.. it is not the maker or sellers fault....

If I walk into a store and order an apple.. and really needed an orange.. it is not the orchards or produce counters fault... ???

 

[blucoondawg]

I stayed with the transmission/hydro fluid in my front axle, I used Mobil 424 as it is one of the fluids listed in the manual.