I bought my truck 6 months ago with only 47,000 miles on it. It had sat for almost 4 years with a dead VP44. Before even starting or cranking the engine I changed the oil and filter. After running it for about 2,000 miles I started getting a very bad odor in the cab when I would stop at a stoplight or stop sign. Finally tracked the smell down to the engine oil. Starts getting that horrible stench around 2,000 miles or so. Any ideas on what it possibly is? Planning on getting oil analysis done as soon as I can get the trans problem taken care of and start driving it again.