Spectro Heavy Duty Platinum Full Synthetic 20w50 1-qt. Enter quantity of 12 for case discount. Engineered specifically for Harley Davidson¬ high-performance engines and other high-output V-Twin motors. Spectro Heavy Duty Platinum Full Synthetic provides smoother shifting, reduces friction, offerstremendous lubrication and provides superior protection in extreme heat conditions. A.P.I. SF/SG _ CD/CG - 4.Sold by the case only.Case quantity = 12