So i just ordered the sample of HD. I used it today 2 clean up my engine. Its amazing. Only took like 8 min!!!
Covered inportant parts
Rinsed off with hose
Spray with Purplr Power
Let dwell for 3 min.
Dryed with blowerd on a shop vac
And finally misted HD 2:1 on engine and let dry......Here are some b4 and afters
It was quick and easy