In the field, "stay-put" capability is everything. Mammoth relies on the XD5 for heavy equipment that lives in the mud, rain, and grit of the West Coast. This is the non-synthetic brother to the FS version, but it still packs the same 5% Moly punch and Calcium Sulfonate thickener. It’s essentially "waterproof armor" for your pins and bushings—engineered to resist being hammered out of a fifth wheel or a bucket pin even under constant impact.

Phillips 66® Omniguard XD5 is a high-performance, heavy-duty, extreme-pressure (EP) calcium sulfonate grease containing 5% Molybdenum Disulfide (Moly). It is specifically developed for use in off-road equipment operating under severe conditions, such as those found in the mining, construction, and logging industries. Manufactured with high-quality base oils and a non-soap, calcium sulfonate thickener, it is fortified with 5% Moly to provide an extra margin of protection against galling and wear under boundary lubrication conditions. It features a high dropping point, excellent mechanical stability, and is highly resistant to water washout. It provides superior protection against rust and corrosion, making it the ideal choice for heavy-duty pivot points and sliding surfaces exposed to the elements.