I guess I figured it'd be obvious that you would change the filter a little more often. I don't recall the exact intervels but the full flow filter you change more often and I think the bypass filter you change like every 25K. Have oil analysis done when ever you change the filter to make sure the oil is still good and run it until the oil sample comes back bad. The synthetics don't brake down like dino oil so they last a long time. You just have to get all the junk out thus the bypass filter which filters down to like 1 micron or something like that.USAFdieselman said:100k??........The filter wouldn't last that long.
F350_Beast said:I'm afraid to even try synthetic in my PSD with 195K miles, would probably leak like crazy...lol