Mach1 Driver 560 Report post Posted January 16 In case anyone is interested in seeing the difference between zinc phosphate and manganese phosphate, see below. This was done following Palmetto's instructions, part of which is to sandblast within an hour of application. Since I had three media grits I did one each for zinc and one each for manganese (total of 6). They were Garnet 110/120, Glass abrasive 75, and Glass bead 9. You shouldn't use glass bead because it polishes the surface and you want the surface to be rough so it will hold more oil. It is the oil that gives the rust protection, not the phosphates. Anyway, there was no discernable difference "visually" between the different grits on the test samples. Zinc is on the left and manganese on the right 2 Maynard and RPM reacted to this Quote Share this post Link to post Share on other sites
GypsyR 32 Report post Posted March 11 The Like thing is broken today but I appreciate this writeup, thanks! Quote Share this post Link to post Share on other sites
RPM 1,190 Report post Posted March 12 I added one for you Gypsy. Terry will know it's not from me cuz we don't get along. :) Quote Share this post Link to post Share on other sites
Mach1 Driver 560 Report post Posted March 12 1 RPM reacted to this Quote Share this post Link to post Share on other sites
