Knock put the freeze plugs, pressure wash first

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Posted by Chris Case [172.70.211.220] on Sunday, April 30, 2023 at 19:40:44 :

In Reply to: Lots of Rust in the Cooling System posted by Greg Coffin [172.68.34.4] on Sunday, April 30, 2023 at 19:31:26 :

Then put some corks in the holes and use a diluted phosphoric acid rust converter. Soak it for a day or so, drain, pressure wash again, neutralize with baking soda mix.

Your cooling system may be full of rust mud up above the core plugs. And you can inspect the outside of the cylinders for steam pits, like cavitation pits on an outboard prop.

Pressure cap adapter

Follow Ups:

Re: Knock put the freeze plugs, pressure wash first - Bob 20:00:36 04/30/2023

Re: Knock put the freeze plugs, pressure wash first - John W S son of John S 11:17:37 05/01/2023
- Re: Knock put the freeze plugs, pressure wash first - Bob 14:47:07 05/01/2023

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