The Ford Barn - View Single Post - Foam in Anti-freeze

mass A man · 08-23-2023, 10:05 AM

Years ago I had a foaming problem, rebuilt engine, clean inside, leakless pump, could drive forever in 90 degree heat, no overheating but foaming. Someone on THIS site mentioned to use Sierra antifreeze, so I tried it (50/50 mix) and it worked. No more foaming. Sierra is a few bucks more than some other brands but I was at a loss and ready to try anything. I'm certainly no chemist so I can't explain it.

08-23-2023, 10:05 AM	#11
mass A man Senior Member Join Date: Jun 2010 Location: Danvers, Ma. Posts: 714	Re: Foam in Anti-freeze Years ago I had a foaming problem, rebuilt engine, clean inside, leakless pump, could drive forever in 90 degree heat, no overheating but foaming. Someone on THIS site mentioned to use Sierra antifreeze, so I tried it (50/50 mix) and it worked. No more foaming. Sierra is a few bucks more than some other brands but I was at a loss and ready to try anything. I'm certainly no chemist so I can't explain it.