Ryan Gary

Ryan Gary

With a solid foundation of 20 years in the mechanical industry and a Mechanical Engineering degree, Ryan Gary brings a deep understanding of automotive systems to Engine Oil Journal. Driven by a passion for vehicles and a commitment to providing accurate information, he created this platform to empower drivers to make informed decisions about engine oil care.

Freightliner Differential Oil Capacity(for All Models)

Freightliner Differential Oil Capacity

Differential oil lubricates the gears, bearings, and other internal components of the rear axle, helping prevent overheating, wear, and premature failure. Capacities vary depending on the truck model, axle configuration (single or tandem), and axle manufacturer (Meritor, Eaton, Dana, or…

Oil Drain Plug Size Chart(For Makes & Models 2026)

Oil Drain Plug Size Chart

When performing an oil change, one of the first steps is removing the oil drain plug from the oil pan. While many assume that drain plugs are “one-size-fits-all,” there are multiple sizes, pitches, and wrench/socket sizes across different vehicles. The…