Bleach is not recommended but at m&d supply Ace hardware they have a detergent that is specifically made for pressure washers
I would not recommend bleach in the pressure washer. Purple power or simple green seems to work well in mine.
Yes you can but it also acts as a corrosive so it can corrode in some pressure washers so if you're going to use it I would run some clean water through it or soapy water through it after you get through using it
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