I have an AFE oiled drop-in replacement filter. Ever since installing it my filter minder does not suck down at all anymore. I ran the stock filter and then a stock 5.9 filter for a while and both would pull the minder down almost halfway just driving through the neighborhood. It must be helping flow better. Oiled filters are OK as long as you maintain them properly. I have a BHAF in the garage waiting for me to modify it to fit the new truck. There are two sensors now that have to be mounted on the elbow and I just haven't gotten around to it yet...