More than 134 million miles down the road, Cenex's Superlube TMS 15W-40 diesel oil has proven a clean, healthy lubricant for heavy-duty engines. Following multi-year, over-the-road tests in which 70 ...

Wondering if 15W-40 oil is only for diesel engines? Learn where this oil grade is used, and whether it's safe for gas-powered vehicles too.

CHS has introduced a fully synthetic diesel engine oil that gives fleets a new tool for increasing fuel economy and engine protection while reducing their carbon footprint.

Fully backward compatible, Delo 400 XSP SAE 15W-40 engine oil delivers exceptional performance in both newer and older heavy duty engines.

Chevron on Monday introduced a new fully synthetic diesel engine oil, Delo 400 XSP SAE 15W-40 – a formulation designed to help maximize engine protection and minimize oil consumption.

The new oil is an upgrade to the company's most popular 15W-40 viscosity, now re-formulated for the 2007 CJ-4 specifications without sacrificing its extended service life.

Cenex Roadmaster XL and Ruby Fieldmaster Premium Diesel Fuels are formulated specifically for the demands of both existing and new engine technologies.

Revolution Lubricants’ Diesel Motor Oil saves 5-20% in fuel costs while cutting engine wear by up to 47%.

Wondering if 15W-40 oil is only for diesel engines? Learn where this oil grade is used, and whether it’s safe for gas-powered vehicles too.

Fully backward compatible, Delo 400 XSP SAE 15W-40 engine oil delivers exceptional performance in both newer and older heavy duty engines.

Delo 400 XSP SAE 15W-40 (Full Synthetic) with ISOSYN Advanced Technology is a mixed-fleet engine oil recommended for naturally aspirated and turbocharged four-stroke diesel engines and four-stroke ...