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John Deere Tractors Discussion Forum

Coolant Dilemma???

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Ken Reese

10-26-2003 08:36:00

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In April of 2001, I added Pioneer Cooling System Sealer to the anti-freeze in my 1050 John Deere "B." The sealer was recommended by the machine shop owner who did work on the engine head.

For some time, I've noticed what appears to be rust build-up in the upper part of the top tank and on and around the filler neck of the radiator. The underside of the radiator cap is also crusted with build-up. The copper three-pronged piece that helps seal the cap to the filler neck has not been affected.

I don't know what's going on here. The anti-freeze contains a rust inhibitor so that should NOT cause the problem. Perhaps the sealer is the cause - and maybe it isn't rust but rather the sealer building up in the area mentioned. ANY THOUGHS OR SUGGESTIONS ON THIS PROBLEM?

Thanks for any comments you might have on this.
Ken Reese

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Lee

10-26-2003 22:22:16

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Re: Coolant Dilemma??? in reply to Ken Reese, 10-26-2003 08:36:00

Just another lesson in taking to heart what you read on the side of an antifreeze jug. Minor amount of anti rust designed for air purging, closed systems is totally wasted on open type coolant system of these two lungers so fresh iron plus water equals rust.

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Clooney

10-26-2003 14:04:01

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Re: Coolant Dilemma??? in reply to Ken Reese, 10-26-2003 08:36:00

Ken, it could be either be the sealer building up as a crusty formation on the exposed parts, or a buildup or rust.
~Most radiator sealant is aerobic & needs the presence or air to form the actual sealing. That is what keeps it from plugging up the radiator & heater core but still allows it to seal leaks in the leak areas that are exposed to air. Because those old tractors don't have a coolant expansion tank there is usually an air space above the coolant level & that allows some crusting of the sealer.
~Because of the air space above the coolant it also allows rust to form even if there is rust inhibitor in the coolant..
~If it bothers you just make sure the radiator is completely full during storage or long down times. Just make sure the radiator overflow is hooked up & will divert the excess coolant to a remote area as the engine heats up & the coolant expands....

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F-I-T

10-26-2003 13:32:07

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Re: Coolant Dilemma??? in reply to Ken Reese, 10-26-2003 08:36:00

Ken:

Is the sealer copper-based? Some are copper powder, some are aluminum powder. It might be copper showing and not rust.

Frank

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jake

10-26-2003 12:17:06

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Re: Coolant Dilemma??? in reply to Ken Reese, 10-26-2003 08:36:00

I cleaned out the cooling system on my 1950 B several years ago when repairing cracked cylinder head. Sand blasted the barnacles out of the water pipes and radiator interior. Put in new anti-freeze mix and can of that water-soluable oil/water pump lube/rust preventative stuff and the rust grew immediately and looked very bad compared to what it was before all that process. Inside of radiator originaly had thin rust color to cast iron parts, now it looks thicker and yucky. Maybe its the new modern antifreeze? What ever that 3-prong piece on the radiator cap does not seem to be affected by anything.

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twopop

10-26-2003 11:21:15

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Re: Coolant Dilemma??? in reply to Ken Reese, 10-26-2003 08:36:00

I would bet its the sealer

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