Mo better now

[furious_blue_imp]

Any tips on what to use for the caked on bugs and junk that get stuck to the bottom of the engine and pipes? Hot soapy water is no match for these buggers. *see what I did there.....*

I've had good experiences using S100 on bugs and general grime.
For baked on oil/grease/tar though a degreaser may be needed.
If that doesn't work then it's time for the mild abrasive (like simichrome) + elbow grease, but not for painted surfaces of course.
For stubborn oil/grease/tar on painted surfaces, as a last resort, I'll use a tar remover but I don't like to do that very often because of the paint damage.