Join Date: Apr 2005
Location: Guilford, CT, USA
You can use a non-BMW coolant available at auto parts stores. You want to find one that has ethylene glycol based antifreeze and no nitrates or phosphates. 50:50 water to antifreeze ratio; you can mix your own (but make sure that you use distilled water, not tap water) or buy the premix. The BMW coolant contains ethylene glycol, diethylene glycol, sebacic acid, sodium hydroxide, 2-ethylhexanoic acid, corrosion inhibitors, defoamers, silicates, and dyes, so don't worry if these are listed as components of a non-BMW product. If you are flushing the system you will need 3.93 qts for the radiator, coolant circuit, and reserve tank. Massaging that lower hose between the radiators will help burp out air bubbles. HTH.
'99 Canyon Red K1200 LT - Buddah Bike