by RS13 » Fri Feb 10, 2012 12:32 pm
Another quality allencr post!
Don't put 90psi through your cooling system. Most radiator caps release pressure at 15psi, with 6 times that if there was a blockage you'd blow seals and crack plastic.
The cooling system can handle a bit of crap floating around without much issue, those filter things IMO are just a gimmick and would only end up causing a restriction or blockage themselves.
Me personally, I drain coolant, fill with water, run the engine for 10 mins, drain, repeat a couple of times until the water comes out clean, then fill with coolant. Never had a problem. If the radiator is blocked again, flushing with a garden hose won't do much, it really needs the top taken off and lanced properly.
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