coolant system flush
Thread Starter
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Fleet Mechanic
Joined: Dec 2004
Posts: 1,365
Likes: 6
From: Ketchikan, AK.
coolant system flush
hi all, i have a 99f250sd, 5.4L. i want to do a coolant system flush on it, since i bought it used and want to know that it is fresh. my question is: do i need any special coolant from ford, or will regular prestone mixed 50/50 with distilled water work just as good. i know that some engines call for "special" coolants, and was wondering if the 5.4 is one of the. thanks in advance !!
Fleet Owner
Joined: Jan 2004
Posts: 26,007
Likes: 575
From: Brentwood,CA
what color os in there now???? green i assume.
the flush that engine remove the clamps on the upper and lower part of the radiator, drain it, then use a garden hose and flush the radiator from the top hole. next flush the recovery tank. just insert a hose into the tank and it will drain out the bottom hose. find the heater hose coming off the intake use the hose and force water thru the rubber hose until it comes out clear and also flush thru the manifold hole until the water comes out clear.
the flush that engine remove the clamps on the upper and lower part of the radiator, drain it, then use a garden hose and flush the radiator from the top hole. next flush the recovery tank. just insert a hose into the tank and it will drain out the bottom hose. find the heater hose coming off the intake use the hose and force water thru the rubber hose until it comes out clear and also flush thru the manifold hole until the water comes out clear.
Thread Starter
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Fleet Mechanic
Joined: Dec 2004
Posts: 1,365
Likes: 6
From: Ketchikan, AK.
thanks for the fast reply, i realize that i can flush it with a hose, but i was just wondering what to replace it with. i know for example that chevy calls for "dexcool" only.... and i need to know if ford has any special needs, or if prestone is good.... thanks !!!
More Turbo
Joined: Nov 2000
Posts: 715
Likes: 11
From: Erie, PA
Plain green is all that you use. It is the best for long lasting components. Just make certain to change it every 2 years. If you want to use chemicals to flush it, seperate the heater core so you don't eat that up.
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