Coolant flush or drain/fill?

[Andyr9981]

All,

I had just stumbled across the coolant change recommended interval of 2000 hrs OR 2 years in my manual, and saw it mentioned doing a flush? I’d like anyone’s opinion on this with their experience… I’m no professional but I highly doubt that at 2 years old with not even 200 hours on my L2502 that the factory coolant should be degraded enough to flush? If I am mistaken please advise me. Give me your insights on staying with the Kubota coolant or an aftermarket name like the Prestone all makes and models coolant. Thank you all in advance!

 

[TheOldHokie]

All,

I had just stumbled across the coolant change recommended interval of 2000 hrs OR 2 years in my manual, and saw it mentioned doing a flush? I’d like anyone’s opinion on this with their experience… I’m no professional but I highly doubt that at 2 years old with not even 200 hours on my L2502 that the factory coolant should be degraded enough to flush? If I am mistaken please advise me. Give me your insights on staying with the Kubota coolant or an aftermarket name like the Prestone all makes and models coolant. Thank you all in advance!

This topic has beem beaten to death.

My L3901 manual is quite explicit:

"Service life of Kubota long life coolant is 2 years"

Thats their product so they should know.

If/when you change it use your favorite flavor/color of long life coolant and follow the coolant manufacturers recommended schedule.

Dan

 

[Bmyers]

I drained mine and then refilled. I did not flush the system. I used an aftermarket that merry the specs.

 

[TheOldHokie]

I drained mine and then refilled. I did not flush the system. I used an aftermarket that merry the specs.

Please elaborate - what are the specs?

Dan

 

[Bmyers]

It called for

Please elaborate - what are the specs?

Dan

Page 113 of the manual. Im on my phone, which i hate posting with, put i can't copy and paste on my phone.

My wife can do everything in the phone, I prefer my laptop.

 

[TheOldHokie]

It called for

Page 113 of the manual. Im on my phone, which i hate posting with, put i can't copy and paste on my phone.

My wife can do everything in the phone, I prefer my laptop.

I dont have the owner's manual but I do have the WSM. It says to use

"ethlyene glycol long life coolant"

and simply refers to it as antifreeze. That's not much of a specification and includes just about everything on the market.

Dan

 

[SDT]

All,

I had just stumbled across the coolant change recommended interval of 2000 hrs OR 2 years in my manual, and saw it mentioned doing a flush? I’d like anyone’s opinion on this with their experience… I’m no professional but I highly doubt that at 2 years old with not even 200 hours on my L2502 that the factory coolant should be degraded enough to flush? If I am mistaken please advise me. Give me your insights on staying with the Kubota coolant or an aftermarket name like the Prestone all makes and models coolant. Thank you all in advance!

I follow both equipment manufacturer's and coolant manufacturer's recommended service intervals.

Generally, the green stuff should be changed every two years, while the newer orange, etc., coolant usually has a longer life.

Not sure what you mean by "flush" but I strongly recommend against using commercial coolant system flush chemicals. When young, I routinely used such chemicals to flush cooling systems but finally tired of changing leaking water pumps shortly therafter and ceased using such products in the early 80s. Haven't changed a leaking water pump since.

If you use concentrated anti freeze, do not top off with municipal tap water. Use distilled water instead. I also use distilled water when flushing.

 

[TheOldHokie]

I follow both equipment manufacturer's and coolant manufacturer's recommended service intervals.

Generally, the green stuff should be changed every two years, while the newer orange, etc., coolant usually has a longer life.

Not sure what you mean by "flush" but I strongly recommend against using commercial coolant system flush chemicals. When young, I routinely used such chemicals to flush cooling systems but finally tired of changing leaking water pumps shortly therafter and ceased using such products in the early 80s. Haven't changed a leaking water pump since.

If you use concentrated anti freeze, do not top off with municipal tap water. Use distilled water instead. I also use distilled water when flushing.

Well if you follow the owner's manual Kubota recommends flushing with a commercial cooling system cleaner before refilling.

Dan

 

[SDT]

Well if you follow the owner's manual Kubota recommends flushing with a commercial cooling system cleaner before refilling.

Dan

View attachment 176543

As stated, I follow recommended service intervals.

Experience has taught me to avoid commercial coolant flush chemicals so I will continue to do so.

 

[BergyPatty37]

@Andyr9981 I would suggest flushing if you are changing coolant types/manufacturers, or if you do not know what is currently in there. Otherwise if you have had tractor since new and are using Kubota recommended coolant I would think you would be ok just doing a drain in fill after 2 years.
I just picked up a used tractor and will be doing a flush since I do not know what specific type of coolant the previous owner used, and some coolants do not mix well and can actually coagulate and block passages.