Ford and Navistar have had a long and arduous relationship with each other, with the latter supplying diesel V8 engines for use in Ford's largest consumer-grade trucks. Early 7.3-liter units performed fine, but the updated 6.0-liter V8 engine was notoriously problematic. That cost Ford dearly and has tainted its tenuous contract with Navistar. While the engine issues seem to have been resolved with the latest 6.4-liter twin-turbocharged units, those older mills are still giving Ford fits. A panel of judges recently ruled in favor of Kenneth E. Corder of Louisville, KY, who purchased a new diesel-powered Ford truck in 2004. Corder's truck, however, had an engine that manufactured in 2003. This isn't at all uncommon, as automakers will use the parts they have on hand whenever possible. Unfortunately, the '03 model-year engines had a rather bad reputation, and despite the fact that Corder has never had a problem with his, he brought a suit against the Blue Oval in 2005 for not disclosing the engine's date of manufacture. The most recent set of judges agreed with Corder in a two-to-one split, so it looks as if Ford will be going to court.
[Source: Automotive News - sub. req'd]