Reply To: coolant in a 12

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My experience with foaming was baffling. Then, I discovered that the way that antifreeze foams is by having air infused into it, and the only place that can happen is the water pump. I had it happen on a ’34 with the shaft on the pump, and ended up machining a new shaft and installing new seals instead of packing, two modern seals, facing in opposite directions. The second time was due to lack of lubricant in the water pump, and air was being pulled in through the grease fitting. Think this happened in Asheville, and it may have been Bill who had a tub of the correct grease, installed, problem gone.