WHY MAMMOTH TRUSTS THIS PRODUCT

In the hangars across the Pacific Northwest, PHILLIPS 66® TYPE A is respected as the "tried and true" choice for pilots who prefer a traditional straight-grade oil without sacrificing modern cleanliness. While multi-viscosity oils have their place, many of our local operators with radial engines or older opposed-piston designs want the high film strength and consistency that only a premium single-grade can provide. We recommend Type A because it utilizes the same elite base-oil quality found in the famous X/C® line, but in a dedicated single-weight format that stays stable under the heavy loads of a PNW takeoff.