Putting a new cost-efficiency measure—“fluid economy”-- into play, Navistar Inc. announced yesterday that independent third-party testing has proved its International ProStar+ tractor powered by its ...

TORONTO, Ont. — By chance, I landed a week-long city run with a leased International ProStar+ paired with a production model EPA2010-compliant MaxxForce 13 engine. I’ve been anxious to try this engine ...

JACKSON, TN — Navistar is disputing allegations that it didn’t thoroughly test MaxxForce EGR engines, in a case that saw former executive Jim Hebe testify that the company “did not test sh*t”, and a ...

LOUISVILLE, KY. Navistar has increased both power and braking ability for its MaxxForce big bore diesel engines for 2010. The company made the announcement Thursday night at the Mid-America Trucking ...

Navistar on Wednesday, March 18, introduced a new 15-liter version of the MaxxForce engine for its International truck brand. The engine “was developed using a proven formula of collaboration,” said ...