If you plan to use the truck for any length of time, I'd install at least a bypass filter. With one, and regular maintenance, engines stay relatively clean. Without one they get pretty dirty inside. There are hydraulic-oil filters that are suitable for bypass duty that do a pretty good job. Then there is the Franz toilet-paper filter that works well too. Either is better than the elements available for the factory bypass filter. Those are too coarse to do much but bleed off oi pressure.
