Dyna-Plex 21C® Durazol HC Engine Oil meets all OEM requirements for today’s EGR engines. Durazol HC is formulated with the latest technology in base oils and the highest performing additive package available, allowing you to safely operate equipment longer between oil changes and increase your bottom line profits. Dyna-Plex 21C Durazol HC provides unmatched soot dispersion capabilities in extended service intervals. Durazol carries the highest quality claim of API CJ-4/SM.

Dyna-Plex 21C Durazol HC Engine Oil incorporates base stocks and proprietary additives which provide the highest oxidation stability available for conventional oils. The hydrocracked base oils provide low sulfur content with high saturate levels, and enable the oil to demonstrate oxidation characteristics comparable to high priced synthetics. These exceptional oxidation results contribute to Durazol’s ability to fight degradation, allowing drains to exceed normal limits.