ATF and Gear Oil blend

[burbguy82]

But whatever their age or condition, those diffs had hypoid differential fluids that were not contaminated by ATF. Both the chemistry and viscosity of those mixed fluids are very different.

Any one fluid mixed with another that reduces its viscosity also reduces the film strength needed to prevent wear for the gearing and bearings, ultimately resulting in failure for both.

so not advisable

 

[burbguy82]

Not exactly huge, but still not great. Roughly a day's profits.

well 6500 is 6500. Send me a check for 6500 if you got it to burn

 

[Chris142]

The delivery guy dumped 300 Gallons of euro spec 5w40 into our waste oil tank. The delivery company ate that one as both tanks are clearly marked with "used oil" and "5w40 only" on them.

 

[ripcord]

The delivery guy dumped 300 Gallons of euro spec 5w40 into our waste oil tank. The delivery company ate that one as both tanks are clearly marked with "used oil" and "5w40 only" on them.

The delivery guy dumped 300 Gallons of euro spec 5w40 into our waste oil tank. The delivery company ate that one as both tanks are clearly marked with "used oil" and "5w40 only" on them.

No Christmas bonus for that guy

 

[Lubener]

It could be used to spray the under carriage of your car or truck.

 

[Sumboodie]

well 6500 is 6500. Send me a check for 6500 if you got it to burn

We did ~$7,000,000 last year. $6500 is like $100 to you or me.

Was just thinking I could use it other than for heat.

I need to do diffs and trannies on 2 trucks. Probably 30 gallons, at ~$40/gallon.

 

[Sumboodie]

It could be used to spray the under carriage of your car or truck.

I use paint. Working on gooky greasy junk SUCKS!

 

[Sumboodie]

The delivery guy dumped 300 Gallons of euro spec 5w40 into our waste oil tank. The delivery company ate that one as both tanks are clearly marked with "used oil" and "5w40 only" on them.

Yeah, was dark, I loaded the pallet with both drums and wasn't "100%" I guess. Early morning and had found out a good friend died the night before.
Have pumped hundreds of thousands of gallons over the last couple years, guess it was bound to happen.

 

[martinq]

Personally, I would try it in a manual transmission that specs a 75w90 as "suitable". I have seen several manuals that spec an "ATF" in a manual transmission but would also accept a GL4/5 that was brass compatible (or not) depending on the type of synchros used. Some will even spec an engine oil (10w30) or similar. The add-pack in the ATF (Dex 6?) and 75w90 (GL5?) are very different but in a typical MT I would expect they both could be suitable so a mix of the two might be okay. It really comes down to the application.

What I know is, you don't want any typical ATF friction modifiers in a hypoid gear set (diff) and some MTs will not tolerate a typical GL5 gear oil. The viscosity would be a secondary concern for me but I would get the oil tested in the application after a test drive.

Anyway, it's something to consider. Anti-rust coating, anti-wood-rotting or burning as fuel are always an option.

 

[crashz]

If you had an old beater, then I'd give it a try as gear oil, but use in any frontline equipment is a hard pass. But if you have a waste oil burner, that's the best use.