Originally Posted by Dana44
ah, the joys of a closed loop cooling system. not very smart
hmm.. i didnt even know air would affect it.
i know when you do like a water pump, or lose water in any way. dont rely on the tank, gotta pop a hose off and fil it manually.
hehe- the joys? naaaa, I wouldnt even go that far.
the "pains" maybe...
ah well- Ive had two- both have gone at least 200,000 with the XJ topping 320,000....both closed systems. One radiator apice...well, one anyway, Im waiting on the MJ to blow its seams.
the "air" that "affects" it, is the wonderfull design of the old 4.0s head...its like a RAID bug trap. Air gets in, and never gets out- it dutifully resists gravity and heads to the front of the engine(since its higher normally anyway) away from the sending unit...excellent design(flaw)..
-- some decide that the coolant tank heat/cool/heat cycle will rid the head of its air, some decide to pull hoses and fill to their hearts content. ALOT of people live with it....and wonder why the guage wanders so...must be ghosts.
Ive done it for years(both ways)- I`ll stand by my way. Burrrrrpppppp. No mo air.
Dam coolant tanks are over $30 again..at this rate, i`ll have to convert to the open system in, ohhhhhh....another 75,000 or so....naaaaaaa.
I`ll buy a metal tank next go-round.