I have a question about my oxid and nitr levels. Gilberttribe has posted much lower numbers than me using the same testing company, Oil Analyzers. He also has the same motor and similar mileage. His with M1 and 7737k are oxid=6.7,nitr=5.7. Are mine that much higher or are we just getting these in different values? I would think the difference would`t be as great as it is. Any comment or opinion would be welcome, thanks.