$1000 Coolant Change

[Recoveryhill]

As my grandmother said, "what's a body to do?"

Send the crud to Blacksone Lab, along with a crankcase lube oil sample. Hola?

 

[JMER817]

I might pay a little more but I go to the JD dealer for all my maintenance items for my John Deere.

 

[Chilly807]

I might pay a little more but I go to the JD dealer for all my maintenance items for my John Deere.

I generally do the same for engine oil, hydraulic oil, filters and such. I went to the Kubota dealer for coolant as well, but what they sold me was a name brand diesel coolant, not Kubota branded. I used it with no problems, it's actually due for a change about now.
In my experience, the small difference in price wasn't worth going anywhere else. If there ever was a problem with it while under warranty, I'd used either OEM parts or dealer recommended substitutes. Plus you've given them some business which counts for something when you're up against it.

Sean

 

[CalG]

I am not a member and can not access pic. My deposits when dry look like wall joint compound and gritty, caukly
The Kubota dealer has never seen this type of coolant problem.

Hey! Those same stubborn deposits appeared all over the engine compartment on my car too.

This problem MUST be associated with some combination of materials!

 

[CalG]

No Chance of a ruined engine over a short time period.

Coolants protect from corrosion. Some better than others, but there is no way the engine would be toast.

My opinion

 

[applepicker]

OP: any idea when you'll have the results? this one's got my very curious!

Just sent sample off to manufacture. It will arrive this Saturday. Applepicker

 

[applepicker]

FLUSHED with distilled water??

4 gals of it. applepicker

 

[texasjohn]

yep, that's what he said. He's seriously careful. Seriously!

FLUSHED with distilled water??

 

[CalG]

4 gals of it. applepicker

I must have used over 100 gal. flushing the V6 auto cooling system. The lawn hydrant and garden hose was good enough for me. Well water, and it's good!

I do use distilled water for the anti freeze mix, and I blew out the system with compressed air ;-)

 

[applepicker]

A real possibility. Silicate drop out sounds exactly what happened to my coolant. What causes the drop out:

These silicates under certain circumstances (coolant with a depleted additive package (worn out coolant), hard water (water mixed with coolant), high coolant temperature, over concentration of coolant (not enough water)) have a tendency towards ?polymerization?, which can cause silicate ?dropout? or ?precipitation? which can lead to gelation of the silicates in the coolant.

See this site for full info: Radiator Antifreeze Plugging

I am not sure why this happened in my case.

 

[CalG]

A real possibility. Silicate drop out sounds exactly what happened to my coolant. What causes the drop out:

These silicates under certain circumstances (coolant with a depleted additive package (worn out coolant), hard water (water mixed with coolant), high coolant temperature, over concentration of coolant (not enough water)) have a tendency towards ?polymerization?, which can cause silicate ?dropout? or ?precipitation? which can lead to gelation of the silicates in the coolant.

See this site for full info: Radiator Antifreeze Plugging

I am not sure why this happened in my case.

Not a very compelling reference, but an example of "it happens"