
We need a tech to confirm once and for all.

Coggin BMW offers a variety of coolant flush coupons to help you save. That's just my guess, so don't sue me if your car overheats! Copious models will not be compatible even with universal coolants or antifreeze. If the disc is submerged, then the coolant level is OK. My guess is that if there is no coolant on top of the disc, then you need to bring the fluid up to cover the disc.
BMW COOLANT HOW TO
I don't think the disc is a float, I think that it's fixed. How to Check Coolant Levels in a BMW Park your vehicle on level ground, and give the engine plenty of time to cool. It’s known internally as the G48 formula and is specific to BMW/MINI cars. I looked for anything that would indicate a max/min fill level but didn't see anything. This is the familiar blue-colored coolant that has been in use since the 1990s but is only approved for cars up to the 2018 model year. After getting a flashlight and leaning over the overflow tank, resting my elbows on the strut bar (no, you don't have to be 8' tall, I'm 5'9"), I looked inside and saw a disc. My BMW needs some more coolant, and I usually have this done at the mechanic when I get my car serviced, but there doesnt seem to be anything else going on. I did notice some white residue in the area underneath the filler cap. If your car starts to run hot your coolant may be low or tired. There was no float popping up like on the S54 engine in my Z4 M Roadster. Genuine BMW - Coolant / Antifreeze - Basic Maintenance - BMW G80 M3 (2021-2023).


I opened the filler cap and saw that the coolant was well below the filler neck. No real need to, since my M4 is just over 2 years old and I recently had the 20K oil change service done. After I washed the car the other day and wiped down the engine compartment, I realized that I had never checked the coolant.
