| I for one like to use what I call tepid, or body temperature water to wash. In other words when you put your hand in it, it neither feels warm or cold. Cold is fine for a rinse.
I feel that's warm enough to help remove the dirt and road film, but not warm enough to remove any carnauba on my truck. Remember 110 degree water will start to remove your wax.
And I agree with Guess My Name, I always flush my hose out completely before I use it on my vehicle. Just to get rid of that old stale water from the last wash. Enjoy!
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BGL
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