Is Hydraulic Gear Oil All the Same for Tractors?

[ericm979]

Can Engine Oils Replace Hydraulic Oils?

 

[CincyFlyer]

Just to clarify hydraulic oil and gear oil isn稚 the same thing. As for the other issues I don稚 loose much sleep over mixing oils.

Well, on many tractors, it is the same thing.

 

[LawnSpecialties]

After reading these posts, I think I better confirm with the dealer before I buy a tractor. Thanks.

 

[Texasmark]

True. But, hydraulic transmission oil, and 80w gear oil are basically the same thing. And, therefore interchangeable in many applications.

Even 30w engine oil is sometimes used in the same applications.

The only difference is the additives.

There's a chart on the www showing engine oil, gear oils and trans/hyd fluid side by side. Viscosity comparisons are interesting.

On hyd fluids per se, there are 3 basic fluids: Hyd fluid, trans/hyd fluid (JD 303 popular spec) and premium trans hyd fluid, for wet brakes, hydrostats and all the new goodies (JD 20C for a popular spec), and then there are the individual companies additive specs and dino and syn base stocks to consider..............Daaaaaaaaa

 

[ray66v]

There's a chart on the www showing engine oil, gear oils and trans/hyd fluid side by side. Viscosity comparisons are interesting.

On hyd fluids per se, there are 3 basic fluids: Hyd fluid, trans/hyd fluid (JD 303 popular spec) and premium trans hyd fluid, for wet brakes, hydrostats and all the new goodies (JD 20C for a popular spec), and then there are the individual companies additive specs and dino and syn base stocks to consider..............Daaaaaaaaa

Yes, I am familiar with that chart, I have posted them.

I don't agree that transmission fluid, and "premium" transmission fluid are two different categories. It's still the same product, with different additives. It simply has evolved, just like anything else.

 

[Sawyer Rob]

Is Hydraulic Gear Oil All the Same for Tractors?

Bottom line is, the answer to the question "as asked", is NO...

SR

 

[buickanddeere]

True. But, hydraulic transmission oil, and 80w gear oil are basically the same thing. And, therefore interchangeable in many applications.

Even 30w engine oil is sometimes used in the same applications.

The only difference is the additives.

Stop right there . Do not be adding SAE90 gear oil to a Deere that uses Hy-Gard in the transmission and hydraulics . Not the 都ame?
Oil must be wet clutch compatable .

 

[buickanddeere]

Yes, I am familiar with that chart, I have posted them.

I don't agree that transmission fluid, and "premium" transmission fluid are two different categories. It's still the same product, with different additives. It simply has evolved, just like anything else.

Well then the oils would be different, not the same .

 

[ray66v]

Well then the oils would be different, not the same .

Since every brand of oil has different additives, by that logic, every single product would be in a different category. Even when they meet the same standard.

Sorry, but that doesn't make sense.

 

[ray66v]

Stop right there . Do not be adding SAE90 gear oil to a Deere that uses Hy-Gard in the transmission and hydraulics . Not the 都ame?
Oil must be wet clutch compatable .

I never said they were interchangeable in ALL applications.

So, stop right there.