David O'Connell Jr
Moderator
I reccommend the bucket test. Our "high draw" injectors did 18:1.
I use the 5800 when i apply house wash usually for 50 gallons of house wash it would be about 1 1/2-2 gallons of 12%sh and the rest water with some soap mixed in .
So you clean houses with the 5800? If so how are you rinsing?