Compression Ignition Addict
Join Date: Sep 2012
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Another coolant question after searching the forum
Was doing fuel filters today and noticed a hint of coolant around the edges of the degas bottle. Drove the truck around until it got to operating temp, ECT and EOC are never more than 6 degrees apart. Doing normal driving, I didn't find any new evidence of dried coolant on the bottle. Did a few WOT passes and found a few trickles of fresh coolant outside the cap.
I have noticed a tea kettle ish sound when I left off the throttle, but I also have a cracked coupler on my metal charge pipe.
A bit more info... I will shamefully admit my coolant is more distilled water than actual coolant, it was low when I bought the truck and am planning on doing a coolant flush as soon as my IPR filter kit arrives, so I topped it off with distilled until then.
Last time I was at the dealer I left it with them for a few days to run performance tests on the truck (which they did at no charge since I had just bought the truck from them) and they feel the coolant is boiling due to being mostly water, and suggested I get it flushed soon to avoid rust and clogging the oil cooler. The tech, who supposedly only works on diesels, thinks the boiling is causing enough pressure to release the cap. Plausable, but the coolant temp rarely rises above 190. According to my SCT, the record high temp is 196.
Thankfully, this truck only gets driven maybe two days a week. I've only put around 800 miles on it since I bought it just over a month ago.
With the evidence presented here... what do you guys think?
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