If you have a diesel, the best choices are WIX oil filters, and Shell Rotella T oil. Avoid Fram! There are a number of web sites that will verify that the only thing superior about FRAM is their advertising budjet. Even the generic WALMART filter tests far better than FRAM. WIX has a website that will cross reference almost any filter number. Since they are primarily a heavy duty agricultural/racing filter, they may not be too available in many urban areas. But, if you can get them, they are worth it...and they usually cost less than the Kubota filters. BTW, does anyone know who makes Kubota filters?