bmoeller, you said that it kept the oil clearer, longer before you turned the fuel up. What about now?
Reason I ask is I've been changing the tp at 2k miles and the oil isn't that clean. It's not black and sticky at 5k miles, more of a really dark dark brown or light black (is that possible?) you can't see through it and it sure doesn't look like Gary's. On the previous oil change I was changing tp at 500 miles trying to keep it clean with no luck.
I've started to question how well my Frantz works, but I do realize that my mildly turned up truck will load the oil with more carbon, hense more black than a stocker and my results may be normal.
RJR