New EPA 2027 emissions rules also mean new diesel engine oil specs. A new generation of heavy-duty engine oils will feature lower viscosity, improved thermal resistance, and possibly longer oil ...

These specs for the latest engine oils cover many lubricant types and include information on various brands, SAE grades, API service classifications, and OEM tests and approvals, all to keep ...

But just as gasoline engine oil specs have changed – so has diesel engine oil. In the past, diesel oil enjoyed higher levels of ZDDP which were considered beneficial.

These best motor oils will help protect your engine and keep it running smoothly all year long, no matter your budget.

Each OEM oil specification is unique, well-researched, and labored over, so that the only way you can be sure you’re getting optimal performance and affording your engine the level of wear ...

ExxonMobil introduced three Mobil Delvac 1 synthetic heavy-duty diesel engine oils for use in on-highway and off-highway applications, with the expectation that the oils’ promised improvements ...

Castrol engine oils meet—or exceed—OEM specifications for Caterpillar, Cummins, Detroit Diesel, Mack, and Volvo. See also: Fluid analysis is more important than ever ...

Motor oil purchases should be determined by a combination of auto makers' specifications and practical experience. Tire dealers and service shop operators who prioritize a lubricant's price are ...

Engine oil becomes critical as automakers look to boost gas mileage New lubricant chemistry turns out to be one of the most cost-effective ways to increase cars’ fuel economy ...