Originally Posted by xtremerevolution

I've done the job about 4 times, and its fairly simple and straightforward if you're willing to do it yourself.

What is the coolant level like? Does your temperature fluctuate a lot? Pop the radiator cap and see if there'* any fluid showing in there. If not, fill it up and see what happens.

Have you checked your oil lately? What color is the oil? Make sure the oil isn't a creme or chocolate milk color. It should be clear, though dark if its old.

Head over to your nearest auto store and have them scan the car. They'll plug in a scan tool, scan the car for engine codes, and they'll tell you what code is throwing that service engine soon. Its a free scan and any auto store will do it for you. Come back here afterward and let us know what that code was.

Originally Posted by xtremerevolution

That I know for a fact. I remember reading the biggest reason for it gunking up on people was the use of non distilled water as a diluting agent, but having not had any of those problems, I can only speculate.

Originally Posted by Danthurs

As long as it'* DEX compatible, it should be fine. But if it'* not, then it has a good chance of sludging up. I think a good system flush is in order.

Originally Posted by xtremerevolution

I with Danthurs here. I would get a coolant flush going if its sludging up.