Originally Posted by AllEuro
If you guys really want to see how long you should be changing your oil or if the FSS is accurate, you should spend the money to have a sample of your oil analyzed at your next oil change. These guys,
Blackstone Labs seem to be pretty well known for their oil analyses. This is really the only way to see if the generalities mentioned in the original article hold true for your car and how you drive it.
Wow, this is really cool. Only $22.50 to diagnose your oil. I took a look at some of the sample reports, pretty detailed as well.
Considering doing this on my Xfire and stratus, this can tell you a LOT.