Sorry, guys. 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 do somewhat fault the makers of Dexcool and GM for their marketing tactics. They were trying to get as much acceptance as possible for their new, environmental friendly, biodegradable product by pushing it as low maintenance. That's why most people only know about the 150k mile maintenance interval part, IF they even know THAT vs. it's a "no maintenance" coolant. Unless you've seen the sticker somewhere under the hood of your car, there was no real mention made of the 5 year part.
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. 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. No discoloration, no chunks or sludge, nothing. Even the old water pump was clean, and this is despite the fact that I've completely neglected the cooling system in this car. 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. Car now has 177k miles on the original motor, trans and s/c.
