I PURCHASED A 2004 DODGE RAM 2500 CUMMINS TRUCK. THERE ARE HORRIBLE DIESEL OIL FUMES ENTERING THE CAB FROM THE ENGINE COMPARTMENT. I WAS FIRST TOLD BY THE DEALER THAT IT WAS DUE TO THE ENGINE BEING NEW. AFTER 15,000 MILES I WAS TOLD THAT THEY HAVE AN OIL ADDITIVE AVAILABLE TO 'FIX' THE PROBLEM BY MAKING IT SMELL BETTER. MY 9 MONTH PREGNANT WIFE CANNOT RIDE WITH ME. THE FUMES ARE HORRIBLE AND ARE CAUSING NAUSEA, HEADACHES, AND POSSIBLY POISONING WHICH I HAVE NO WAY TO VERIFY. THE SMELL IS SO BAD I AM NOT SURE WHAT TO DO, BUT IT IS COMPLETELY UNACCEPTIBLE AND SEEMINGLY VERY DANGEROUS AND COULD BE FATAL IN THE WINTER MONTHS WHEN THE WINDOWS MUST BE ROLLED UP. I HAVE RESEARCHED THIS ISSUE ON SEVERAL ONLINE FORUMS AND MANY PEOPLE ARE HAVING THIS ISSUE WITH THE 2003 AND 2004 DODGE RAM CUMMINS 2500 AND 3500 TRUCKS. *AK