Kenworth delivered its first full-production truck powered by the new 400-hp Cummins Westport ISX12 G natural gas engine during a special roll-out ceremony Tuesday before employees at the Kenworth assembly plant in Renton, Wash.
Kenworth’s initial 400-hp ISX12 G engine went into a Kenworth T800 Extended Day Cab. The truck’s keys and a commemorative plaque were presented by Preston Feight, Kenworth assistant general manager for sales and marketing to Jerry Winchester, CEO of Chesapeake Oilfield Services and Chris Broussard, president of COS affiliate Oilfield Trucking Solutions.
OTS maintains its headquarters in Oklahoma City, Okla., and is part of Chesapeake Oilfield Services, which also includes Performance Technologies, Hodges Trucking Co., Great Plains Oilfield Rentals, Compass Manufacturing, and Nomac Drilling. The group’s trucking divisions have purchased more than 400 Kenworth T800 and C500 diesel trucks in the past three years.
The privilege of driving the T800 with the 400-hp ISX12 G off the assembly line went to Winchester with Broussard in the passenger seat.

Oilfield Trucking Solutions operates a 100% Kenworth fleet of 260 trucks in Texas, Oklahoma, Ohio, Pennsylvania, and West Virginia. The company’s trucks traveled several million miles last year, transporting thousands of barrels of water and crude daily to help producers meet drilling, completion and production needs. The T800 is powered by compressed natural gas (CNG) and will haul crude oil throughout various Oklahoma oil plays.
The Cummins Westport ISX12 G engine requires a single fuel source and can run on either CNG or LNG (liquefied natural gas), both of which are cost-effective, low-carbon and low-emissions fuels. Kenworth offers the ISX12 G for the T800 short hood with a 116.5-inch BBC and T660.

Oilfield Trucking Solutions’ natural gas-powered Kenworth T800 short hood is equipped with two side-mounted Type 4 CNG cylinder tanks for a range of 450 miles and the Kenworth Extended Day Cab for improved driver comfort.