For those of us who change their own oil (and yes we know we’re not saving much $; it’s the principle of the thing) just because it’s practically the only thing we can do on the Clarity, here is some info on oil filters. Also good for those using the dealer so you can make sure they’re using the best Honda filter and not the cheaper one. The good news is that our Clarity ICE uses the good old tried and true Honda filter made by Filtech that virtually all Hondas use. Here is the difference between the 2 Honda filters available (from hands.com): “Honda interchanges part#15400-PLM-A01 with 15400-PLM-A02. They stock and ship both to their dealerships however the A01's are the in-demand part number for Honda filters. One major difference is the A01 filters have metal end caps inside whereas the A02 filters have cardboard.” So be sure you’re getting the A01 if using Honda filters. Here is a comparison on the cut open filters side by side: Filter mfgs have not yet added the Clarity to their list except for Fram that I can find. Here is the Fram # (PH7317) you can use to cross reference filters from whatever mfg you wish to use. Please note that I am NOT recommending Fram filters. They’re just the only Mfg I could find that had the Clarity listed. I am well aware of how “passionate” (politest word I could think of) people are over oil and filters. It’s crazy. Just go to bobistheoilguy.com if you have a 1,000 hours or so to go down that rabbit hole. So please, no flames on brands. Ditto for oil brands. Any high quality synthetic detergent API certified 0W-20 weight oil will do. (Of course the gear heads among us “know” that we’re using the best brand and everyone else is stupid for using their brand.) LOL And it’s a free country, so you can follow the owner’s manual or do your own thing on the change schedule. My hour meter hooked up to the ICE tells me (after 6 weeks) that even if all my ICE driving was at 70 mph, I’d still put less than 1,000 miles on the engine per year. But to avoid warranty issues, I’ll have to change it once per year. Bummer.