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post #1 of 6 (permalink) Old 03-01-08, 10:38 PM Thread Starter
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Radiator sludge

Just bought a 97 Ranger...67000 miles....purrs like a kitten, does not overheat...everything runs well....Problem....I went to drain the radiator...there is brown slimy stuff.....flushed it out ....still comes back....it is not milky white....Any suggestions from anyone as to the problem....Please tell me it is not a head gasket...I already have one truck down with that problem.....geesh....

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post #2 of 6 (permalink) Old 03-01-08, 10:50 PM
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Re: Radiator sludge

I'm guessing it simply has not had radiator inhibitor put in the cooling system as it is supposed to. Keep flushing the system until the water seems clear then perhaps run the vehicle with the heater turned to hot then reflush it again. You could even use some radiator flush product to try and clean it well.

Then refill system using the correct amount of inhibitor, usually glycol based, and run engine to operating temp with heater on and radiator cap off to bleed air from system. Check levels and put cap on. Make sure the overflow bottle is cleaned out too and the hose to the bottle is in good condition.

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post #3 of 6 (permalink) Old 03-01-08, 11:01 PM Thread Starter
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Re: Radiator sludge

Thanks, I will try that tomorrow...Hopefully it will do the trick....The guy that had it prior certainly did not take as good a care of it as they mentioned.....guess that's the way it goes....Thanks for the info....I appreciate it.
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post #4 of 6 (permalink) Old 03-02-08, 07:19 AM
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Re: Radiator sludge

I agree with Big Block Ford,, multiple flushings are in order. Even if all seems clear, if weather permits, run a couple days with just water and flush again before adding antifreeze. Mine was the same way. (These rangers tend to run cool)
Good luck.
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post #5 of 6 (permalink) Old 03-02-08, 07:51 AM
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Re: Radiator sludge

might just be pertinant to get a NEW RADIATOR, ALSO CHECK HEATERCORE
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post #6 of 6 (permalink) Old 03-02-08, 08:21 AM Thread Starter
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Re: Radiator sludge

Thanks for the suggestions and I will implement them today. I know I forgot to turn heater on to flush that as well.
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