1 Coolant Change... Sat Sep 03, 2022 8:46 pm
bmwk100rs
Silver member
I'm changing the coolant on my 1986 K100RS. The manual specifies 2.8L in equalizing tank. What in the heck does manual mean with "in equalizing tank"? According to the instructions here, I should poor the 2.8L of mixed coolant (60% distilled water and 40% antifreeze) through the system cap until fluid just starts to come from the filler neck and flow to the overflow tank. I did that, however, the coolant never reached the filler neck. Do I need to poor more than 2.8L or should I just fill the overflow tank to 1/2 and start the engine?