Coolant type?
Thread Starter
Instructor
Joined: Jul 2019
Posts: 193
Likes: 66
From: Central California
Coolant type?
I was bypassing my throttle body coolant line today and I realized that the coolant coming from the lines was a light green. I went to top off the surge tank and saw that it was orange. Why would there be dexcool in the surge tank but greenish coolant in the radiator, hoses, and block? Thanks, I want to make sure what to do.
Thread Starter
Instructor
Joined: Jul 2019
Posts: 193
Likes: 66
From: Central California
Thanks, I'll plan on it. What I am confused about is that I have had the car like this for almost 4 years now and it has never been a problem car stays under 200 all the time. The coolant is super clean and no junk. Well I guess the 5 years is already up so I'll go ahead and change it out.
Melting Slicks
Joined: Nov 2008
Posts: 3,146
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From: Edmonton Alberta, Canada
Absolute must, Dex cool and distilled water. I am surprised you have not experienced any corrosion....lets just hope and pray. You will find out when flushing old coolant. Heard some real horror stories on this topic. Good luck. PS that is a real mystery, why dex in reservoir and green in other location...weird. Let us know when you find out more.
Last edited by El original; Aug 26, 2019 at 12:22 AM.
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Most people don't understand the need for the proper coolant. Even GM get's it wrong sometimes. 68 GTOs came with a aluminum timing chain cover and their factory coolant ate through the passage between the oil and coolant & you got a nice mix of coolant in your oil. Now that I think of it it's time to flush the system and replace with new coolant. Time just goes by so fast it's easy to get behind on these things.
Melting Slicks
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From: East Windsor NJ
Melting Slicks
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From: Garland TX
Extended life coolant that is unvirsal comes in a green tint as well. Most likely that is what is in there if it hasn't been an issue. Years ago when I worked as a lube tech that is what we would top off with. I actually just recently had to add coolant since it was low. Picked up some long life universal coolant from autozone and it was a green tint.