Use prepsol on your engine, wheels and frame, but keep away from your seats and wing covering. Its a de-greaser and harsh on dacron.
For your wing use normal car soap. WAP is perfect, just use it in spray mode and not strong direct setting. That setting strips paint from a car, and will damage your wing covering if used like that.
Enjoy, I love washing my own plain and doing proper inspection while am at it.
