Re: Packard model 2365, 288 cubic inch engine running hot

Posted by Owen_Dyneto On 2015/6/13 17:24:10

Oxalic, not oxylic. Many paint stores carry it. Try about a heaping cup predissolved in warm water, top off the system and go for a 25 or more mile drive, and drain, Repeat until it comes out clear and then give it a rinse with water and some bicarbonate of soda to neutralize any traces of oxalic acid which might remain. This process essentially duplicates the old duPont Heavy Duty cooling system cleaner.