Tips for grinding aluminum -
Ive done a lot of grinding(jig,OD,ID,surface) and my routine with aluminum is to use the wheel that is mounted. They all seem to work about the same. I am sure that you had a bazillion peices to run you could home in on a wheel and coolant combo that paid off,but,most my stuff is short run,1 or 2 peices.
: aluminum grinding wheel
Aluminum oxide and silicon carbide aluminum grinding wheel 4.5" x 7/8" Premium Zirconia Flap Discs Grinding Wheels 120 Grit Type 27 - 10 Pack by Benchmark Abrasives