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General Discussions about the 300M

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 #286567  by mnitetrain
 July 17th, 2012, 2:50 pm
Wonder if a "sticky" on this one might be helpful?
 #380608  by JasonCooley559
 September 7th, 2019, 5:53 am
Had the same problem as Dave he led and. Hanged everything in the cooling system. To make a long story short. The air in the reservoir was swapping with the coolant in the block. To teat my theory I took a pair of mini channel locked and pinched the top reservoir hose between the res and the T. And it hasn't over heated since.