Steve Swedberg highlights some of the most interesting questions hes received from readers this year.

With increasingly divergent gasoline and diesel engine oil specs, some say that crossover oils are close to deaths door. …

Steve Swedberg examines the upward trend in heavy duty drain intervals.

As hardware and fluid specs for automatic transmissions continue to proliferate, will Californias proposed legislation n …

Steve Swedberg adds up the gains that come with lighter oils, and finds its not just fuel economy.

The U.S. Environmental Protection Agency and National Highway Traffic Safety Administration jointly adopted a second rou …

As a part of the new API CK-4 and FA-4 heavy-duty diesel oil categories, a newly proposed ASTM International test standa …

As GF-6 faces more delays, Steve Swedberg warns that todays GF-5 oils could face 18 months of bad road.

Turbocharged gasoline direct injection engines are bringing new challenges for lubricant formulators, who must ensure th …

Steve Swedberg wonders whether some marketing terms are truly suitable for use on auto lube labels.

With testing for existing engine oil specifications becoming tenuous, the API Auto Oil Advisory Panel expressed concern …

Steve Swedberg ponders the future of universal engine oil categories.

Technical Bulletin 1, issued by Kevin Ferrick, APIs senior manager for engine oil licensing, addresses the adoption of n …

Steve Swedberg eyeballs the reasons that good engine tests go bad.

Nearly two dozen trade associations, committees, panels and other interest groups have a say in the creation of engine o …

The American Petroleum Institute announced last week the introduction of a trademarked special service symbol to help co …

The processes and committees used to develop engine oil specifications are complex, slow and unbalanced, Lubrizol senior …

The American Petroleum Institute is temporarily granting provisional licenses for the ILSAC GF-5 and API SN, SM, SL and …