Oil & Fuel WHAT HAPPENS TO HYDRAULIC OIL?

[zilla24]

I would use it for a near lifetime supply of chainsaw bar oil.

 

[newbury]

The only reasons to replace Hydraulic fluids is to renew the additives such as anti foaming and corrosion control,
AND to expunge accumulated water that has been introduced into the system though many mechanisms. Temperature changes and vent tubes being predominant.

The "fluid" would likely remain perfectly useful if not for these secondary issues.

Analysis would prove the technical aspects, but a fluid change is less costly.

Send me you drained fluid, I'll burn it!

With SUDT2 at about $100 for 5 gallons, and my M4700 takes about 10 gallons, what are you thinking for tests that would cost $200?
Blackstone now charges $28 for a standard test, what others do we need to approach the cost of even 5 gallons of SUDT2?

 

[Sawyer Rob]

I would use it for a near lifetime supply of chainsaw bar oil.

It's NOT sticky enough for me to use as bar oil...

Chainsaw bars and chains cost too much these days, to cheapo out on not using bar oil, that only cost 5 bucks a gallon.

SR

 

[4570Man]

It's NOT sticky enough for me to use as bar oil...

Chainsaw bars and chains cost too much these days, to cheapo out on not using bar oil, that only cost 5 bucks a gallon.

SR

Where do you buy $5 a gallon bar oil? It’s usually around $8-10 for the generic brand at tractor supply. I’ve bought it on clearance for $17 a case for 3 gallons once. I’ve used hydraulic oil in a pinch a few times but I usually use bar oil. I know a tree guy that always uses new 15-40 motor oil in a quart. I’m not sure what the logic is since it cost more than bar oil.

 

[PILOON]

A neighbor was an engineer and worked for Shell.

He claimed hydraulic oil was the cheapest lowest grade of lubricant that they refined and so he always used SAE (non detergent) instead of hydraulic.
I also seem to recall some machines did specify engine oil vs hydraulic.

 

[zilla24]

I typically use bar oil as well but if I had 17 gallons of relatively clean hydraulic oil I think I'd use that first.

 

[CalG]

A neighbor was an engineer and worked for Shell.

He claimed hydraulic oil was the cheapest lowest grade of lubricant that they refined and so he always used SAE (non detergent) instead of hydraulic.
I also seem to recall some machines did specify engine oil vs hydraulic.

We might assume that SUDT2 is not the fluids your neighbor was referring to. Or else someone is making a killing!

 

[GeneSimm7]

Speak to me of costs - almost 17 gallons of hydraulic fluid for a change in my M6040. I take all used oil - engine, gear, hydraulic in to the Kubota dealer - the service dept has a waste oil furnace.

By-the-way - Gene, what sort of tractor do you have that recommends hydraulic oil change at 300 hours. My M6040 says every 600 hours.

My tractor is a Century 2535 (similar to a Branson 3510)