Thread: Coolant Preference?

Originally Posted by ItsMeDc

Going to do a thermostat swap and looking to replace the old coolant. Anyone have any preference to the dex-cool orange stuff or the green stuff? It's a 2000 so not really sure when the last coolant was replaced. I heard either can cause some corrosion. Just looking to see what everyone else has had success with.

ItsMeDc--

Anything but Dexcool.

Me, being a genius, failed to pop the radiator cap when buying my GTP. When I finally did get around to it, it was completely gunked.

Me, being a genius, flushed, and refilled with Dexcool because that's what all the stickers inside the hood told me to do.

Only to have it re-gunk in less than a thousand miles. The reserve tank was unsalvageable, and I'm sure there's a lot of gunk fused in the bottom of the radiator that I'll never get out. I'll have to replace the rad eventually.

I stuck a garden hose in one end of the radiator, pulled the drain plug at the other end, flushed like crazy while I went up to Sonic to get a couple burgers, came back a couple hours later, refilled with conventional green, and haven't looked back. I will never buy any General Motors car with Dexcool in it, ever again - at the very least, it will be the first thing I fix when I do buy it.

Originally Posted by hensleya1

ItsMeDc--

Anything but Dexcool.

Me, being a genius, failed to pop the radiator cap when buying my GTP. When I finally did get around to it, it was completely gunked.

Me, being a genius, flushed, and refilled with Dexcool because that's what all the stickers inside the hood told me to do.

Only to have it re-gunk in less than a thousand miles. The reserve tank was unsalvageable, and I'm sure there's a lot of gunk fused in the bottom of the radiator that I'll never get out. I'll have to replace the rad eventually.

I stuck a garden hose in one end of the radiator, pulled the drain plug at the other end, flushed like crazy while I went up to Sonic to get a couple burgers, came back a couple hours later, refilled with conventional green, and haven't looked back. I will never buy any General Motors car with Dexcool in it, ever again - at the very least, it will be the first thing I fix when I do buy it.

if you didnt do anything like what i posted, or pull the lower rad hose, well you just mixed green and dex. you dont want to mix the old dex with green, it will booger up worse then before.

all i see is you flushed the radiator. nothing more, theres a lot of coolant still in the engine and heater core.

Originally Posted by Scottydoggs

if you didnt do anything like what i posted, or pull the lower rad hose, well you just mixed green and dex. you dont want to mix the old dex with green, it will booger up worse then before.

all i see is you flushed the radiator. nothing more, theres a lot of coolant still in the engine and heater core.

Scottydoggs--

Probably due to some poor wording on my end but the entire system has been flushed out, multiple times, including the block and heater core. The rad caught the worst of the Dexcool though. I replaced the reserve tank and hoses more recently, along with another flush. Periodically (every couple weeks?) I pop the radiator cap and ensure it isn't re-gunking, and I haven't had any problem since.