I don't know if I would trust any soap in the sun.
I actually use the Si02. It actually works ok in direct sun, even on black.wash the entire car then rinse with a fairly high amount of pressure, not pressure washer strong, just a strong jet from the hose.
2015 F-150 Crew Cab Lariat
2016 Chevrolet Camaro 2SS
[QUOTE=MrOneEyedBoh;1569210]True, and I forgot to add this, Id like something that wont spot when used in the sun. McKees 37 Sio2 wash soap doesnt spot int he sun this making it a good candidate for me. BUT it does leave something behind....
Be sure to read between the lines.. by that I mean McKees soap can dry without spotting, but will it spot after rinsing if not dried right away? That happens a lot when washing in the sun. I believe it will water spot from the rinse water if not towel dried and allowed to dry in the sun.
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