Unopened Engine Coolant
Safety Car
Joined: May 2001
Posts: 4,759
Likes: 1,647
From: Fairfax Virginia
In MY opinion I would use it without a second thought. It is new, sealed and still fresh in the bottle ready and waiting for action.
I hope it lasts as I too have several gallons of the VW Blue anti-freeze on the shelf in my garage to be used on my old Vanagon.
Good Luck with your DexCool, you should be okay!
I hope it lasts as I too have several gallons of the VW Blue anti-freeze on the shelf in my garage to be used on my old Vanagon.
Good Luck with your DexCool, you should be okay!
Melting Slicks
Joined: May 2019
Posts: 3,243
Likes: 1,404
From: Mid-Atlantic
2025 C4 of the Year Finalist - Unmodified
2023 C4 of the Year Finalist - Unmodified
2022 C4 of the Year Finalist - Unmodified
2021 C4 of the Year - Unmodified Finalist
Last time I did a coolant flush, which was in the spring, I used two gallons of ten year old unopened Prestone I had sitting around.
Haven't had a problem.
But I flush it and put in new every year anyway.
Haven't had a problem.
But I flush it and put in new every year anyway.
Last edited by Natty C; Oct 8, 2021 at 08:10 PM.
