Thread: Coolant Change
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Old 05-23-2019, 09:46 PM   #66
Midwestdrifter
 
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Default Re: Coolant Change

My general approach with an unknown system, is to drain it first. Then with the drain open, direct a stream of a hose nozzle into the radiator. The goal is to dislodge any crud that has built up at the bottom of the radiator. In some cases back flushing this way into the drain for sort period. catch what comes out. If it looks like mud or dirty pond water, a full flush is likely called for. If not, I would just refill and keep on trucking.
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