Motor Oil - XP7 - 10W40 - Synthetic - 12 QUARTS A semi-synthetic 10W-40 racing oil based on our proven XP5 racing oil. Ideal for desert and off-road engines, IMCA modified engines, spec engines, flat tappet camshafts and hydraulic lifter engines. Designed for clearances under .0030". Viscosity typical of 10W-40.