Look at this cap [Archive] - GrandAmGT.com Forum

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chuckclose1
05-26-2009, 03:53 PM
Look at this cap for my overflow resivoir. it is corroted. is this from the dexcool

i think i need to have the colant system power flushed.

GrandAmMe
05-26-2009, 03:56 PM
i dont think thats corrosion. to me it looks like just dried up dexcool!

FromTheInside
05-26-2009, 04:29 PM
Definitely flush and check back next oil change. You don't want that crap clogging your radiator

RPO3
05-26-2009, 04:48 PM
Dexcool = Fail

PhantomLover007
05-26-2009, 09:43 PM
Mine kinda looked like that too before. The bottle looked pretty bad too. I popped it out and washed it with dish soap and hot water.

FuriousG
05-26-2009, 10:44 PM
That's how mine looked right before I had to have the engine rebuilt. You will want to get that checked out and see if you have a LIM gasket leak.