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Oldgearz · 09-19-2021, 03:52 PM

A good cleanout after oil in antifreeze can be done with liquid dish soap, after the oil leak cause is fixed. Drain old antifreeze and replace with water and a quarter cup liquid dish soap. Run engine for 15 minutes until hot. Drain block and radiator (pull lower hose and open draincock. Repeat this process. After second drain, run engine with radiator draincock and engine draincock open and a hose with clean water running into the radiator top. Run motor until water coming out of draincock and radiator is clear. Messy...but works great. Refill with new antifreeze.

09-19-2021, 03:52 PM	#7
Oldgearz Senior Member Join Date: Aug 2020 Location: Sagle, Idaho Posts: 359	Re: So, I have apparently blown head gasket A good cleanout after oil in antifreeze can be done with liquid dish soap, after the oil leak cause is fixed. Drain old antifreeze and replace with water and a quarter cup liquid dish soap. Run engine for 15 minutes until hot. Drain block and radiator (pull lower hose and open draincock. Repeat this process. After second drain, run engine with radiator draincock and engine draincock open and a hose with clean water running into the radiator top. Run motor until water coming out of draincock and radiator is clear. Messy...but works great. Refill with new antifreeze.