NAVISTAR issued a recall on the R26 and W22 models

On certain vehicles equipped with an optional dual-fill 75 or 100 gallon fuel tank, the fuel cap assembly used to seal the unused side of the dual-fill fuel tank may have been manufactured with a hose material that does not meet design specifications. During normal usage the hose may deteriorate and cause a fuel leak. Fuel leakage, in the presence of an ignition source, could result in a fire causing property damage and/or personal injury. Correction: Dealers will replace the original fuel fill cap assembly with an updated version.