View Full Version : Does antifreeze have a shelf life?


Carguy8888
07-22-2012, 02:33 AM
I opened up my overflow and to me the antifreeze smelled old. Not that sweet smell (car has 98k but maybe I am crazy? I thought it would be a good time to flush the system. What is the easiest/best way to do this? I assume it is the regular green antifreeze, how many gallons do I need. I found an unopened one to start but it is 10+ years old. What is my best plan. The car never goes above 210. Thanks. Brian.

colinpd137
07-22-2012, 03:06 AM
I bought a Peak flush n fill kit from auto zone, has little water hose attachment and a few other things.
Idk how well it works, but going to find out when i have a chance to do it. Just have to decide what i'm going to do about catching all the fluids.

As for your amount question..

Capacity is as follows:
- 3800 V6 with manual transmission = 11.6 quarts
- 3800 V6 with automatic transmission = 11.4 quarts
- 5.7L V8 with manual transmission = 11.9 quarts
- 5.7L V8 with automatic transmission = 11.8 quarts

colinpd137
07-22-2012, 03:07 AM
Oh, and honestly I would just buy fresh coolant "just to be safe"

NC01TA
07-22-2012, 09:16 AM
Fresh Dexcool. It isn't the green stuff but that's your choice. I keep mine the way it came from GM.

Carguy8888
07-22-2012, 12:38 PM
I bought a Peak flush n fill kit from auto zone, has little water hose attachment and a few other things.
Idk how well it works, but going to find out when i have a chance to do it. Just have to decide what i'm going to do about catching all the fluids.

As for your amount question..

Capacity is as follows:
- 3800 V6 with manual transmission = 11.6 quarts
- 3800 V6 with automatic transmission = 11.4 quarts
- 5.7L V8 with manual transmission = 11.9 quarts
- 5.7L V8 with automatic transmission = 11.8 quarts

Good idea, that is a dam good question about catching the fluids. I don't want to flood my friends mantion where the car stays. I will look maybe the kit comes with an adpater?

Carguy8888
07-22-2012, 12:45 PM
Oh, and honestly I would just buy fresh coolant "just to be safe"

Fresh Dexcool. It isn't the green stuff but that's your choice. I keep mine the way it came from GM.

Perfect, two gallons & is it premixed?

Carguy8888
07-22-2012, 12:47 PM
Fresh Dexcool. It isn't the green stuff but that's your choice. I keep mine the way it came from GM.

Nice monte, my buddy has a black/burg gut non aerocoupe w/ 40k. Did you have any factory paint problems?

NC01TA
07-23-2012, 10:21 AM
Nice monte, my buddy has a black/burg gut non aerocoupe w/ 40k. Did you have any factory paint problems?

Thank you! The original owner did have issues almost immediately back in '87. It was very common. The dealer re-painted the problem areas, mostly the roof and trunk. It has held up fine over the next 25 years. Here's a picture for you that was just taken on the Tail of the Dragon this past week (just click on it to enlarge).
364944

Carguy8888
07-24-2012, 09:24 AM
Nice car, my friends is black & GM repainted the tops too. My other friend had a burgandy no aero but it is long gone. They would be more amazing w/ a 350 or 383. Lol.