Hello all, trust me i know this thread has been beaten to death. but just wanted to know what spec coolant is in a 01-03 f4i and if its good enough for the dreadful ohio winter. I had an 04 gixxer6 and it made it through the winter lol.

 

All the manual states is that it be a good quality ethylene glycol anti-freeze/coolant with corrosion inhibitors. You also want one with no silicates and that is safe for aluminum engines. Prestone Extended Life meets these specs & it's what's in mine.
50/50 is good for -34°F, 70/30 good for -84°F.