Keeping the ride detailed?

What do you guys like for keeping the underside of the car looking good? Engine bay, frame, suspension...

I've seen simple green, purple power.

I used a strong soap product but it left permanent stains on aluminum and chrome finish.

Nice not having the show paint on the outside to keep up with on this one lol

View attachment 1715043343
Love the sweptline what setup do you have in it ,Looks like some beefy rear tires