We have an '02 Honda Odyssey, an '03 Mazda Protege5 and a '91 Mazda Miata. The WIX fitment guide specifies: Honda #51334; Protege #51365; Miata #51356. All three filters have ADBVs, and the SAME gasket dimensions, thread size, bypass PSI (8-11), max flow (9-11 GPM) and nominal micro rating (19). They differ only in burst pressure and beta ratio: Honda 2/20=22/40 and 280 PSI; Protege 2/20=15/22 and 300 PSI; Miata 2/20=6/19 and 363 PSI. Assuming that all three will fit within the confines of each engine compartment, is there any reason not to order a case of 12 of one of the filters and use them for all three cars? As much as a buying decision, this will help me understand a bit more about filters, so thanks in advance.