Yep dish washing liquid removes the waxes from the vehicle (including inside the panels where you can see) and the Sodium content increases rust potential behind seals and in cavities.
Rainx windscreen additive should really only be used with a RainX treated windscreen.
Never had bubbles etc when using it.
Bars Bugs is ok.
The best part of the RainX windscreen is bugs wash off easier, and no need for wipers in the rain![]()



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