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 | VF620 SC tuned and coded by BPM | KW V3 | ARC Wheels w/AD08 | OnEighty Lights | AA Signature Exhaust | BMW Performance and IND trim | Recaro Profi and child seats
'13 35i M-Sport X3 | JB4 Stage 1 | BMS Intake | H&R Springs | Gloss black grill | CF Wrap and Coded by me