The new heavy-duty engine oil Delo Sports Advanced SAE 5W-40, Delo Sports Synthetic Blend 10W-30, Techron D Concentrate and the new Havoline Formula SAE 10W-30 Story & photo by Randy S.

Delo 400 XLE Synblend SAE 10W-30 shows up to 3.6 percent fuel economy improvement in short-haul, class 6 vehicles and up to 1 percent improvement in long-haul, class 8 trucks compared to SAE 15W ...