Hydraulic oil change interval

[OldcrowP51]

Change interval for hydraulic oil on a L3901 is every 400 hours.
I’m in far northern Minnesota and run my tractor about 75 hours spring summer and fall (no winter use)
Normal operation is at PTO rpm’s (not a lot of idling)
Last hydraulic oil change was 3 years ago and now only have 200 hours on the oil.
It will be 6 years to reach the 400 hours.
Your thoughts?
Change it sooner?
I’m thinking send a sample in to have it analyzed.

 

[NCL4701]

If you want a definitive answer rather than a plethora of opinions, send off a sample for analysis.

 

[MapleLeafFarmer]

My Kubota manual says every 400 hrs or 2 years whatever comes first.

I tend not to want to try to out guess or try to be smarter than the engineers when it comes to recommendations like torque settings, tire pressuses, fluid recomendations, etc as I'm guessing they are smarter than me.

I try to stick to the factory recommendations.

 

[JonM]

yup needs to be changed. 2 years is a long time to collect moisture

 

[TheOldHokie]

Change interval for hydraulic oil on a L3901 is every 400 hours.
I’m in far northern Minnesota and run my tractor about 75 hours spring summer and fall (no winter use)
Normal operation is at PTO rpm’s (not a lot of idling)
Last hydraulic oil change was 3 years ago and now only have 200 hours on the oil.
It will be 6 years to reach the 400 hours.
Your thoughts?
Change it sooner?
I’m thinking send a sample in to have it analyzed.

My $.02.

If it looks clean and clear follow the 400 hour guidance.

Dan

 

[OldcrowP51]

My Kubota manual says every 400 hrs or 2 years whatever comes first.

I tend not to want to try to out guess or try to be smarter than the engineers when it comes to recommendations like torque settings, tire pressuses, fluid recomendations, etc as I'm guessing they are smarter than me.

I try to stick to the factory recommendations.

Interesting.
My manual does not reference a time interval based off the calendar.
Hours only.
Same goes for the engine, every 400 hours.
I’m changing engine oil and filter right now at 200 hours (3 years)
Sending a sample in to have analyzed.

 

[skeets]

Wait, first you say I have to change engine oil, and now hydro oil too,, will it never end