Which car is it???? I can attest to the superb results I have achieved with P21 Total Auto Wash. I used it to degrease a couple of engines (flat sixes). Use it in various dilutions for cleaning just about everything. Great on tile grout at 1:10 dilution.
The don't seem to have it here at Pelican anymore (or the new catalog fails to show it). I get it at auto geek.