- Joined
- Aug 9, 2022
- Messages
- 144
Hello all,
I recently flushed the coolant in my 2015 Jeep Wrangler at the same time as a thermostat replacement using the Mopar OAT 10 year/150K mile concentrate coolant. I ended up short on the quantity of new coolant I purchased for the flush, so I had to additionally use 1 gallon of coolant I purchased 4 years ago on 8/24/2018 for topping off my overflow tank. The 4 year old coolant is the Mopar 10 year/150K mile prediluted 50:50 premix with a manufacturing date of 3/17/2018, and had been sitting on the shelf in my store room in the original opened but tightly capped container. I have read various older threads where people stated that opened prediluted coolant has a shorter shelf life than concentrate, with varying figures from 1 year to 5 years with reduced corrosion protection. How long will I have full protection before needing to replace this coolant again?
I recently flushed the coolant in my 2015 Jeep Wrangler at the same time as a thermostat replacement using the Mopar OAT 10 year/150K mile concentrate coolant. I ended up short on the quantity of new coolant I purchased for the flush, so I had to additionally use 1 gallon of coolant I purchased 4 years ago on 8/24/2018 for topping off my overflow tank. The 4 year old coolant is the Mopar 10 year/150K mile prediluted 50:50 premix with a manufacturing date of 3/17/2018, and had been sitting on the shelf in my store room in the original opened but tightly capped container. I have read various older threads where people stated that opened prediluted coolant has a shorter shelf life than concentrate, with varying figures from 1 year to 5 years with reduced corrosion protection. How long will I have full protection before needing to replace this coolant again?
Last edited: