Well Navistar was demanding higher prices and threating to refuse to ship the new engine to Ford unless Ford pays the price Navistar is demanding-which would breach the supply agreement. Navistar is not complying with its obligations under warranty-sharing...So Ford is withholding money it owes Navistar for engines in a bid to recover what Ford says it is owed. Basically, both companies are playing dumb over the whole warranty claim which has totally F UCKED over many dealers. Neither want to take the blame or the loss to their already shallow pockets.