can we use this regular prestone coolant for a 2000 Z. cuz on the owners manual it says we need the one with dex something i think. and i couldnt see it on the prestone coolant, so i was thinking we probably cant use it. is there something else you guys recommend?

 

Use only Dex-Cool in the LS1 engine. You can get it at any auto parts store.

 

Actually, you can mix the 2, they are both ethelyneglycol based. The Dexcool as extra lubes and corrosion inhibitors. Mixing the 2 will make the Dexcool not last as long, but I wouldn't go anywhere near the recommended life of the stuff. I doesn't cool very well onve you get near 100k miles.

 

Go to Wal-Mart and check for "Dex-Cool Approved" Prestone.

It's in a light gray bottle with an orange cap. That's what I have in my car.

 

ahhh crap! Well thats just dandy. I just flushed my radiator and I didn't use that coolant. I refilled it with regualar.

Is that a problem? Do I have to use "dex-cool"?

 

no

 

It should say: "DexCool GM Approved", somewhere on the front of the bottle. That's what I have also.

It is also called Extended Life Coolant, but make sure it's orange.

 

Just make sure it's orange in color. From what I was told at a Chevy dealer, mixing orange and green coolants will create a sludge.