Car now has 177k miles on the original motor, trans and s/c.Antifreeze comes in several colors. The upper and lower radiator hoses are so old and weak that they're collapsing on themselves, and the 2 WP changes is the closest that it's come to a flush and fill. Even the old water pump was clean, and this is despite the fact that I've completely neglected the cooling system in this car. No discoloration, no chunks or sludge, nothing. This is the 2nd time I've had to replace it in 5 years, but the Dexcool that came out (about a gallon's worth) was nice and clean. Oh, ironically, the reason I didn't get much sleep last night is I was up till pretty late doing the water pump on my car. Unless you've seen the sticker somewhere under the hood of your car, there was no real mention made of the 5 year part. That's why most people only know about the 150k mile maintenance interval part, IF they even know THAT vs. They were trying to get as much acceptance as possible for their new, environmental friendly, biodegradable product by pushing it as low maintenance. I do somewhat fault the makers of Dexcool and GM for their marketing tactics. Didn't get much sleep last night and I posted that right before I was about to take an apparently much needed nap, but yeah, as most people figured out, obviously I meant 5 years. I'm just saying a lot of the failures are due more so to people not following directions than "Dexcool sucks".I agree with everything said except its 5 years not 5 months lol In fact, I still suggest that people doing a LIM gasket completely and thoroughly flush out their cooling system and switch to the green stuff.
I still think they should have left the "normal" coolant alone. Yes, it was the Dexcool eating away at them, but there's a pretty good chance it wouldn't have happened if the coolant was changed on time. How many of you have even done it ONCE? The problem with Dexcool is if it's not changed on time, it becomes acidic a lot faster than the "normal" green coolant, thus why all these gasket failures take place. That would mean every single Gen II w-body should have had the coolant/antifreeze drained and refilled AT LEAST twice by now, if not 3 times. Most people ignore or don't notice the 5 months part. The service interval clearly states 150000 miles. The biggest reason why Dexcool fails is due to user error. I'm just saying a lot of the failures are due more so to people not following directions than "Dexcool sucks". It would not surprise me at all if that was mixed at some point. When the 2 mix, the chemical reaction causes the coolant to gel up and clog the passages, pretty much like what your pictures show. Yes, it was the Dexcool eating away at them, but there's a pretty good chance it wouldn't have happened if the coolant was changed on time.Īlso, you absolutely can not mix the "normal" green coolant with the Dexcool, and I'm sure there are a lot of people out there that go to top off with the green coolant because they don't realize their car came with "the orange stuff", or don't care because the green stuff is cheaper/"it's all the same".
Most people ignore or don't notice the 5 years part.
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