I also did not know there was washer fluid for summer. I live in the ATL suburbs and it definitely gets cold here every year (not Minnesota cold, but cold). It is 30F right now, it was in the teens last night and I know I could get in my Tahoe right now and nothing would be frozen.
Living in MN I only use whatever does not freeze at -30F. It doesn't matter if it is summer or winter I only use that and can tell the car paint never suffered anything.
Delivered on 02/11/2015: Macan S Agate Gray | Black Int w/carbon fiber | 20" RS with colored crest cap | 14-way Seats | PASM/AS | Prem+ | High Gloss Trim | Rear Fascia and Side Blades painted | Park Assist/cam | Heated Steering Wheel | LCA | 3-Zone | Smoking Pkg | Comfort Lighting |
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I guess it is a lot colder in Colorado than it is in DC. I took delivery of my Macan GTS at PEC ATL on October 21. I've used the windshield and headlight washer in 14 degree weather with no issues. I too wasn't aware they had summer blend washer fluid.
Well, it's pretty darned cold this week in the DC area. Mine still has whatever they put in it for delivery. I don't know if that was added in Rhode Island during port delivery or at PECATL.
The usual caution applies, don't spray it immediately on entering the car as the cold glass will frost it right up. But once the defroster's running it seems to work. I don't know that I've ever bothered noticing winter/summer blend differences. If only because the weather around here crazy.
I'm fond of joking "We get all four Seasons here... sometimes in the same week!"
The forecast calls for 61F this Thursday... and back down to 29F come Saturday.