Yes, I'm using an antifreeze type of washer solvent that I buy full strength (premixed). I' m not sure what temp it' s warranted to, but should be well below 0° f. Any ideas where else I should check the lines for being frozen?

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Current Fleet:
2018 328d Xdrive Sport Wagon
2011 X5 Xdrive 35d
1973 2002 tii
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Past loves:
2015 i3 REX
2011 535i Xdrive
2005 X5 4.4i
2003 530i
1999 528i
1995 525i