This bulletin applies to 2007-2009 Mazda CX-7 and Mazda speed 3 and 2006-2007 Mazda speed 6 models. Some vehicles may experience a hesitation or surge when accelerating after engine warm-up.
This TSB applies to 2008 Mercedes-Benz C300 vehicles and other models equipped with the 272 or 273 engine. According to Mercedes-Benz, in isolated cases, engine oil loss can occur at any of the three rear camshaft cover caps.
Some 2011 Ford F-150 and 2011-2012 Mustang vehicles (excluding Boss) built on or before 3-31-2011 and equipped with the 5.0L engine may exhibit an intermittent metallic rattle or scratching type noise in the area at the front of the left hand cylinder at idle with the engine at operating temperature. This noise is not a typical upper engine tick or tapping noise.
Vehicle manufacturers will continue to integrate engine systems in the pursuit of smaller, more efficient units which emit fewer and less harmful toxins.
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