Next time you change the oil on your HD diesel or work truck diesel rig, move up to Amsoil's new OE 10W-30 synthetic diesel oil. Made for older diesel vehicles that require SAE 30 or 10W-30 diesel oil, it meets emission system requirements, controls soot thickening and wear, and performs in extreme temperatures. Meets recommendations for: API licensed CJ-4/SN, ACEA E9, Cummins CES 20081, MB 228.31, CAT ECF-3, ECF-2, ECF-1-a, Mack EO-O, Volvo VDS-4, VDS-3, MAN 3575, Renault RLD-3, MTU Type 2.1. Price: $7/qt; $27/gal.