Dex Coolant

[KennethJohnson]

I'm hearing a bad reputation for Dex coolant... Wears down the gaskets quicker than other coolants?
http://www.dex-cool.net/

I'm doing an intake manifold swap, and going to be flushing my coolant system.

Should I avoid Dex cool once I do so?

[BillBoost37]

Dex would turn to oat back years ago. Formula's have changed many times since. Ford, Dodge and GM all went to nylon based gaskets and had issues. That particular part wasn't the coolant's fault. It was either neglect to do maintenance (coolant exchange) or it was nylon gaskets. Hence why GM fixed the issue with metal frame gaskets.

[KennethJohnson]

Are you saying if I swap to metal gaskets I should not see the sludge again? (After doing a complete flush on the coolant system of course)

[selliott]

Personally I'd still swap over to green. But that's just me, after having multiple issues with dexcool I won't use it no matter how many times they reformulate it.

[Scottydoggs]

Are you saying if I swap to metal gaskets I should not see the sludge again? (After doing a complete flush on the coolant system of course)

sludge is from air making contact with the old dex coolant. flushing it to clear water, then adding a flush to it will clear most of it out, you'll still find a booger here and there on the rad cap after wards down the road. nothing to worry about.

[BillBoost37]

Personally I'd still swap over to green. But that's just me, after having multiple issues with dexcool I won't use it no matter how many times they reformulate it.

Green is not suited to the amount of aluminum in our systems. Green is not a good replacement.

Use Anycolor and smile after flushing it to death.

[stocker]

http://www.napaonline.com/Catalog/Ca...EXT_0417656901

This is what I bought. It may be green but it is for all makes and models. The compatibility chart says its fine for our cars.

[selliott]

It looks like mine is universal as well just green in color

[Brammer]

If I know one thing from my short time here it's that if it comes out of BillBoost's mouth you should trust it.





....except that thing he said about my mom.

[selliott]

Don't know about the mom thing lol but the rest is true.

[1998gt]

i found that nissan green works just fine, since thats what i have on tap at the dealership i work at......NEVER dexcool

[Impala131]

I tore down a 99 GTP (200K miles) to replace the LIM gaskets as a preventative measure... the factory plastic gaskets were actually in good shape, considering the age/mileage. The previous owner religiously changed coolant every year. Fresh dex is perfectly fine, although not sure how long it takes for dex to become acidic.

That said, the replacement metal LIM gaskets are still good insurance.