Originally Posted By: George7941
That is it, the surge tank on my Sierra. As you can see, no sludge or residue. In spite of all the dire warnings about using Deathcool, in over a decade of using Dexcool I have never seen the slightest trace of sludge.
The coolant is over three years old now. I plan on draining the coolant soon and refilling with fresh Dexcool.
George:
Just because the Dexcool looks good doesn't mean it isn't "dissolving" the gaskets. Mine always looked good until one day when the IM gasket "ate" through. Changing it more often doesn't prevent gasket damage either.
But since you have used Dexcool so much and are so confident with it, I guess I am "preaching to the choir." I guess millions of people are just dreaming that they had problems with Dexcool and it really doesn't perform any more poorly than other coolants.
Besides, with GM in bankruptcy, you can feel secure that your warranty is safe !!!