Best way to use purple power?

xLURKxDOGx said
Steel? Aluminum? I go straight up with no water on steel and its works great. Wear a good set of rubber gloves or you'll have no skin left. I dilute it a lot for aluminum parts, and check every 15/20 minutes.

J.

Pretty much all steel..... splash shields, bolts, engine brackets, bolts, internal engine parts, and bolts.

I guess the pistons would be the only aluminum I can think of on these old cars.