Per the great Al53, I tried DG 501, 105 and AW this weekend. Rinseless 4-1, clay, 501 (wait 24 hrs), 105 (wait 24 hrs) then AW. I even applied all by hand.
Excellent results, especially on metallic silver. Since 501 is similar to 105 there is no need to apply 105 2x. 501 has strong cleaners and...