N55 Coolant Flush

[KNS]

The coolant itself may last many years but it is the additives (plasticizers, etc) that are depleated over time. Additives help the rubber hoses and plastics last much longer. BMW cooling systems aren’t exactly known for their longevity, don’t compromise by stretching out the coolant change.

[bagekko]

Just do some repair or work every few years that requires pulling the radiator that way your forced to flush and refill lol.

Just had to replace the compressor on the M5 and it was due for new coolant haha

[Happy Jose]

Originally Posted by mackeroni

This may not be the popular approach, but what the heck... My local dealer only charges $99+ tax for a coolant flush and fill. I am more than happy to spend the time looking at new cars and chatting with my sales guy while this is being done every 60,000 miles.

Pros: Clean, quick, painless, BMW-branded coolant, peace of mind

Cons: Ummm

Peace... Mack

If you can get the dealer to do anything for $99, you have a good deal.

Regarding the radiator hoses, they'll last until the car ends up in the junk yard!

I use Mercedes coolant which is cheap at $20/gallon from my dealer. When it comes to fluids like oil, coolant, brake fluid, power steering fluid, transmission oil, etc, I use exactly what BMW says to use. You can get the correct stuff from places like ECS, FCP Euro, RM European, Pelican, BMW or MB dealers, and even Walmart for engine oil.

Online ordering is the way to go. Vendors have this stuff down to a science, and you'll get things fast. I even order Mr Beef-O Puss's litter from Chewy. Having it delivered to my door beats dragging a 42 pound sack home from Walmart. Also most vendors offer free shipping on orders of reasonable size.