:drinkPM sent........we have the wix powercore ins stock, ships same day for about 1/2 the cost of the parts counter...
Husker Diesel - Discount Performance Parts Headquarters! - WIX 49184 PowerCore LBZ/LMM Air Filter
I just go by mileage. For a cellulose filter that is a long time. I looked at mine at 25k and found it to be ready to be changed.You should be able to get up to 70K on the power core. Even with me driving around at work I have 73K on mine and the minder is moving now.
You running the Wix Powercore from Husker?Since my bulk order (placed @ 3pm, shipped at 3:24pm) arrived in one day (yesterday, amazing guys/gals :hyper...no slackers over there:thumbsup), I dropped in a new Wix drum last evening and reset the DIC (strangely, it’s accurate on my truck) and it jumped up 4 mpg, the engine seemed to be quieter and the turbo whistle got louder.