In the United States heavy duty trucking lubricants market, the drive for energy efficiency is influencing a transition from SAE 15w-40 diesel engine oils to those with lower viscosity grades such ...
Such competition, of course, inspires questions of whether O'Reilly's in-house motor oil is any good ... including standard ...
Newer automotive gasoline engines require the use of SAE 5W-30, 5W-20 or 0W-20 passenger car motor oil (PCMO) grades, dependent on manufacturer recommendations.” In addition, diesel engine oil ...