This whole thing is a brilliant idea. The Navy has a ton of people working on planned maintenance [1], and anything that could improve reliability is worth its weight in gold. I know you mentioned ships already for grease, but just thinking of how many things need maintenance and how nice it would be if you could have a system that ensured it was all done. Please attach RFID's to filters to ensure they get swapped out!

1. https://www.navsea.navy.mil/Home/Team-Ships/PEO-Ships/Suppor...