Originally Posted by Iron Man
...I use Blackstone). They give a detailed analysis .... They are great people to work with.
+1 I know this is a religious/emotional issue but if you really want to have peace of mind about your oil do it right. A huge added benefit is the fact that you can glean part failure data from the analysis often down to the exact part. This is the 21st century and with the data made available today there's no need to guess. End of sermon