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Discussion Starter · #1 ·
OK the other night coming home from a hunting trip the heat in my Commander faded off to cold air. Found it to indeed be low on coolant. Now I had replaced waterpump (well my 12 yr old did most of the work) earier this year. I know it was full. Upon removal of the rad cap I found a clump of what appears to be a peanut butter like sludge collected at the filler to the rad. So is this the telltale sign of a blown head gasket? I'm hopeful I just did something stupid and mixed 2 dissimilar coolants together.
 

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No other symptoms?
 

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Thinking oil getting in your coolant would be more snot like and less peanut butter like.
I remember hearing if you do mix the wrong coolants that it would gel which sounds more like what you are talking about.
Got a picture?
 

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I don't think that is oil. Seems more like additive breakdown, and maybe, if you didn't flush the block when you did the water pump, :rolleyes: it may just have loosen some crude up.
 

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Discussion Starter · #6 ·
No , no pics but creamy peanut butter is exactly what it looked and felt like . I've owned it since 29,000 mi and now has 168000 mi. No leak stop has ever been used to my knowledge. Coolant loss is my only symptom at the present. As for a pressure test, no I don't have a gauge...yet.
 

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Discussion Starter · #7 ·
Oh , and yeah didn't flush the block when pump was done....
 

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Oh , and yeah didn't flush the block when pump was done....
Welp, you're a big boy, you know the drill. :p

That many miles, is the reservoir cracked? heater hoses, and what not in good shape? Hows is the radiator cap? lots of people overlook the cap. it could be bad and leaking through it. I'm trying everything to avoid a blown head gasket. only way to know for sure is a pressure test.
 

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One other question, did you use tap water or distilled water?
 

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Discussion Starter · #10 ·
Oh , and yeah didn't flush the block when pump was done....
Welp, you're a big boy, you know the drill. <img src="http://www.cherokeetalk.com/forum/images/smilies/tongue.gif" border="0" alt="" title="Stick Out Tongue" class="inlineimg" />

That many miles, is the reservoir cracked? heater hoses, and what not in good shape? Hows is the radiator cap? lots of people overlook the cap. it could be bad and leaking through it. I'm trying everything to avoid a blown head gasket. only way to know for sure is a pressure test.
One other question, did you use tap water or distilled


Well hoses seem good , reservoir is good , cap is original but do have a new one on "the shelf". I used tap water to fill it up I believe cause im to cheap to buy 50/50. Started it up last night and think I'm hearing a squealing bearing external to the engine...i.e. another bad water pump ? . I can only wish that is the case.
 

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Well the good news from 3,000 miles away is that your gunk is most likely caused by minerals in the tap water. It sets up electrolysis inside the water jacket and causes rust and carbonates etc.
 

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Discussion Starter · #12 ·
Thanks guys , probably going to tear into it after Christmas sometime. Flush and fill will also be on the itinerary.....
 

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I had an external squeal recently too....I had replaced water pump only about 10000 miles ago...new one not rebuilt. No leaks or cooling issues....thought it my be my original equipment alternator...it was hard to tell where the noise was coming from.....then one of the two idler pulleys digested itself and it was clear from where the noise was emanating.... easy fix to replace.....though I had to go to a John Deere tractor supply to find the 100mm flange bolt replacelement.
 

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OK the other night coming home from a hunting trip the heat in my Commander faded off to cold air. Found it to indeed be low on coolant. Now I had replaced waterpump (well my 12 yr old did most of the work) earier this year. I know it was full. Upon removal of the rad cap I found a clump of what appears to be a peanut butter like sludge collected at the filler to the rad. So is this the telltale sign of a blown head gasket? I'm hopeful I just did something stupid and mixed 2 dissimilar coolants together.
Almost garuntee that it's because of 2 diffrent mixed coolants.
 
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