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Tom Wesenberg · 06-18-2013, 10:27 AM

My Allis WD and Model A both have non pressure radiators and I've also never had a foaming problem with 50% antifreeze.

Could the water pump be sucking air past the seal?
I use lead packing rings with grease smeared on them and it seals perfectly.

06-18-2013, 10:27 AM	#7
Tom Wesenberg Senior Member Join Date: May 2010 Location: Mpls, MN Posts: 27,582	Re: Foaming Antifreeze My Allis WD and Model A both have non pressure radiators and I've also never had a foaming problem with 50% antifreeze. Could the water pump be sucking air past the seal? I use lead packing rings with grease smeared on them and it seals perfectly.