Does coolant go bad??
Fleet Mechanic
Joined: Feb 2006
Posts: 1,776
Likes: 5
From: Lorain County, Ohio
Originally Posted by 78f3504x4
My uncle found 4 gallons of unused anti-freeze (unopened) in the garage. It is 10-15 years old. Is this still usable?
More Turbo
Joined: Nov 2004
Posts: 725
Likes: 0
From: Western Canada
Keep me informed, my father is moving and has 3 1/2 gallons that is about the same age and unopened, he bought it for his T-Bird roadster but never finished the car. So it's just been sitting there.
Senior User
Joined: Aug 2004
Posts: 285
Likes: 0
From: Terre Haute, Indiana
I wouldnt be afraid of it, as long as it is onopened I would use it.
One thing I do know is when antifreeze was going bad in an older cast iron engine you would start to notice the color changing to rust. The rust inhibitors were broke down.
The newer cars with aluminum engines dont give this tattle tale sign, once a year I drain the radiator and refill with new antifreeze and flush it every 4th year. I spend more than needed on maintaining my cars but overall they are worth the investment.
67 F100 300ci I6 with 262,000 miles and only a valve job and 1 starter and 2 clutches.
94 Caddy deville 4.9 with 227,000 miles 2 water pumps, 1 alternator and an ISC motor
89 Caddy deville 4.6 with 167,000 miles 1 water pump. 1 alternator
73 F100 302 176,000 miles 1 starter, and 1 clutch and remaned carb.
86 T-bird 156,000 miles major collision took it to the grave yard
One thing I do know is when antifreeze was going bad in an older cast iron engine you would start to notice the color changing to rust. The rust inhibitors were broke down.
The newer cars with aluminum engines dont give this tattle tale sign, once a year I drain the radiator and refill with new antifreeze and flush it every 4th year. I spend more than needed on maintaining my cars but overall they are worth the investment.
67 F100 300ci I6 with 262,000 miles and only a valve job and 1 starter and 2 clutches.
94 Caddy deville 4.9 with 227,000 miles 2 water pumps, 1 alternator and an ISC motor
89 Caddy deville 4.6 with 167,000 miles 1 water pump. 1 alternator
73 F100 302 176,000 miles 1 starter, and 1 clutch and remaned carb.
86 T-bird 156,000 miles major collision took it to the grave yard
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