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Crawlers, Dozers, Loaders & Backhoes Discussion Forum

Mitsubishi BD2F with very rusty antifreeze - causes??

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swamp dog

03-08-2008 18:37:25




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The BD2F antifreeze looks like brown mud. With cold winter temperatures, it should have enough antifreeze to handle minus 40. It obviously has some antifreeze in the mixture as nothing has cracked. But I can't even see the needle in the tester because of the rust.

I have no idea where this dozer came from, although it might have come from a warm climate where they did not use antifreeze. Would that account for the rust in the cooling system? Or is this a sign of a more serious problem. Of course it will be necessary to flush the system and change the antifreeze, but I'm wondering if that will be all that is needed. Thanks for your help.

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Penn

03-09-2008 05:11:48




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 Re: Mitsubishi BD2F with very rusty antifreeze - causes?? in reply to swamp dog, 03-08-2008 18:37:25  
You sure the rust you are seeing is not some sort of stop leak that someone put in,you don't have much choice but to flush out the system till you get the water clear,see if yours has got an anti corrosion filter,if it has change it,if not consider fitting one.
P



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rustyj

03-09-2008 09:04:19




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 Re: Mitsubishi BD2F with very rusty antifreeze - causes?? in reply to Penn, 03-09-2008 05:11:48  
Clearly the case of the previous owner not doing maintenance on the cooling system! Better do a complete flush on the whole system, replace hoses, etc. And use fresh permanent anti-freeze in it. A good brand of anti-freeze is preferable, not some el-cheapo stuff. That owner probably never changed the stuff. Probably never thought about it! Some folks, when they hear the word:"Permanent" think it means just what it says:"Permanent" in that it never needs to be changed! The term was coined way back when folks, during the Depression, couldn't afford permanent anti-freeze, so they used alcohol type a.f., as it was way cheaper to buy, and folks didn't have a lot of extra cash! Permanent meant it wouldn't boil out when you drove, and it didn't boil readily like alcohol would, if the weather warmed up before you got a chance to drain it out!

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