I'm running 50/50 and we've had a couple +23 degree mornings and I havent notice anything different. So far it starts right up with no problem.
Click>> 2008 BMW 335xi E92: 11.988 @ 114.080 MPH
BMS JB4 G5, WW meth kit, OCC ~ Stett CAI ~ Helix FMIC ~ ER Charge Pipe w/Tial BOV ~AR Catless DP~ Aero Front Lip ~ BMS LED Angel Eyes ~ Black Kidney Grills ~ Painted Lower Grills
Painted Reflectors ~ Aluminum Pedals ~ 35% window tint ~ Painted Calipers/Rotors ~ KW V1 Coilovers ~ 19" Avant Garde M310's 235/35 & 275/30 G-Max AS-03 tires