So I know it's a no no to mix G12 w/ cheap antifreeze but I had no choice and had to. Well now I want to flush and go back to straight G12 but was wondering what brand of flush to use?! I couldn't find anything saying what to use. Most auto places around here carry some form of Preston flush. Thanks much.

~Don

 

Just water. Several flush cycles( drain, fill water, start it, let it warm up to open the thermostat) and then add G12/distilled water mixture (read on the back of the G12 bottle for correct dilution for your temperatures), heat the engine up, shut id down, open the tank cap to let air out and top it up. Keep doing this for next 2-3 rides and that's it.

 

^^couldn't have said it better myself!!

 

yah... just use water...safer