That is correct. As far as I'm tracking standard windshield wiper fluid is 30% meth, 70% distilled water with some soapy "stuff" in it. The meth for the engine is 70% meth, 30% distilled water and no soapy "stuff" in it. It dries fast and is a little streaky, but works in a pinch.
'09 E90 M3 SG | VF620 SC | KW V3 | ARC Wheels w/AD08 | OnEighty Lights | BPM Sport coding | AA Catless Exhaust | BMW Performance Wheel | Recaro Child Seat
'13 X3 DSB with M Sport | JB4 Stage 1 | BMS Intake | H&R Springs | Gloss black grill | CF Wrap and Coded by me