Chevron Delo 400 XLE SAE 15W-40 Heavy Duty Motor Oil, 1 Gallon has Better Low-Temperature Pump-ability. Delo 400 XLE SB SAE 15W-40 with ISOSYN Advanced Technology is engineered with cutting-edge additive technology to ensure superior protection for on-highway applications, including GHG 17 compliant engines designed to lower CO2 emissions.