2025 Coolant Color in reservoir tank

[Riding Deacon]

Has anyone noticed the CHANGE in coolant color of your NEW 2025 RAM at time of delivery and say with 10,000++ miles on the coolant? When I picked up my truck, the color of the coolant in the reservoir tank was a bright pink, almost like the color of Pepto Bismol. (you can check the color of NEW trucks with dealer pics on their websites as a lot of them show the engine bay, if you don't remember what yours looked like). Now with over 13,000 miles on the truck, the color of the coolant has turned a "muddy" pink. I opened the reservoir with the engine cold and there is definitely no oil in the tank and with a recent oil change, there is no antifreeze in my oil. I can only assume with all of the dissimilar metals in our engines, this is the "normal" chemical reaction happening with our antifreeze and the color compared with new. I don't know anyone else locally with a 2025 MY truck, so thought that I would get some input from other 2025 truck owners! Thnx for the input!!!

 

[PhillyBoiP]

completely normal, coolant darkens as it picks up heat over time. Mine is doing too. Im at about 50k miles and mine is a dark pink.

I highly recommend doing an early coolant flush, i am doing on mine this weekend, they are really easy on our trucks. Here is a guide Draining the radiator

 

[USMUSL]

At 8k miles, my 2025 is the same way. Some of its coolant has magically disappeared also. It's being bought back under Lemon Law, so I haven't been too worried about it.

As for the color, though, I assumed the yellowing reservoir also plays into how it appears.