Oil & Fuel diesel rated antifreeze

[RickB]

You won't go wrong using Fleet Charge, but I think in this case the green Preston 50/50 mix should be fine. The Fleet Charge additives address cavitation (which eat away cylinder sleeves). The Kubota block is a parent bore engine (does not have sleeves) so the Preston would work for your application. My $0.02......

Cavitation erosion can be a significant problem on parent bore engines. Ask anyone familiar with post-1965 Ford tractor engines.

 

[kennyd]

Members: I usually go w/Prestone green coolant. in Kubota M series tractor...Some recommend coolants that are specifically diesel rated. Your take? Is Prestone rated so? thanks bb

My take is to get the right stuff. Do a Google search on "cavitation". The proper coolant is a must have in diesel engine. If you want to use the cheap stuff, then at least add so DCA.

I first read about this in the context of Ford's 7.3 engine - but I'll pass on the pun, for now.

I own a '92 F250HD with a ATS turbo'd 7.3L engine...there are sure a lot of horror stories about cavitation!

 

[Reg]

My understanding is this process actually creates microscopic bubbles that then collapse, this collapsing actually causes tiny pits, and the process, over time, eats through the cylinder sleeve. The additives actually form a sacrificial layer around the sleeve, this layer is constantly pitted but refreshed by the additives in the coolant. Eventually the additives need refreshing.

Yeah, maybe.
Given that there are gasses dissolved in the liquid they could well be coming out somewhat like decompression bubbles as the metal vibrates and the shock wave(s) compress/decompress the solution of gasses in liquid.
(don'cha just HATE the bends ?)

I think it doesn't happen in ALL diesel engines, not even in all engines of a particular make/model/year.
Just some, the ones that have the right (WRONG !) sympathetic resonances.

 

[biggerten]

That's fine, but it's pretty inexpensive stuff (Wallyworld carries it), and I see no upside to not using it.

It's in my tractor.

 

[Egon]

[I own a '92 F250HD with a ATS turbo'd 7.3L engine...there are sure a lot of horror stories about cavitation!/QUOTE]

Some sources will say it was porosity when the blocks were cast.

 

[kennyd]

[I own a '92 F250HD with a ATS turbo'd 7.3L engine...there are sure a lot of horror stories about cavitation!/QUOTE]

Some sources will say it was porosity when the blocks were cast.

I hope so...Mine is still holding together so maybe I got a un-holy one

 

[Opti-Mist]

Cavitation erosion can be a significant problem on parent bore engines. Ask anyone familiar with post-1965 Ford tractor engines.

That is true, and its manifestation increased with horsepower and full load usage, and was found on the thrust side of the bore. The 6-cylinder blocks tended to exhibit it, but the 3- & 4-cylinder blocks didn't seem to see nearly as much of it. As indicated, the introduction of coolant conditioners helped quite a bit.