While I would not disagree with you on cleaning and lubing your window fan motor since it sucks in an enormous amount of particulates into generally unfiltered or sealed motors, I strongly would disagree with you on changing the oil in your car every 3 thousand miles.
In a past life my company supplied testing and measuring equipment to literally every single power train manufacturer on the planet (Audi, BMW, Porsche, Mercedes, Opel, Renault, Peugeot, Ferrari, Lamborghini, Rolls, to the US to South America, Asia, etc. etc.) This equipment was used both in the engine test centers as well as production to measure dimensional and surface characteristics. Every single engineer has told me that it is throwing away money to change oil so frequently due to the advances in both production equipment and lubricants. These are the guys who build new engines and test engines that have been used in all manner of trials. As a side note, the coolest thing I ever saw was at the BMW Munich plant where they build the McClaren BMW 12 cylinder engines for the $1,000,000 McClaren sports car. Every engine is run in 100 hours on a test stand. The engineer was showing me the test chamber and turned off the lights. The beautiful contoured exhaust headers were glowing red hot.
The only reason for advocating such frequent oil change is the automotive companies would have their dealerships on them like a pride of hungry hyennas if they proposed longer service intervals since the dealerships make their profit from service and not car sales. It is environmentally irresponsible to advocate such frequent oil changes.
As far as atty cleaning is concerned, a lot has to do with your vaping style. When I started vaping, I used carts which really ate through attys. The mechanical jostling of taking the cart on and off as well as the poor heat dissipation and vaping until dry caused a lot of premature atty failure. Dripping does allow for better heat dissipation, but then again people tend to vape until they run dry before topping off. Add to that the effect of different juices, voltages, and draw, you will not get two people to agree on anything.
My atty life has improved dramatically since I went to the ReoMini for being out and about and Vapemates with my BuzzPro and ProVari at home/office. The "auto feeders" keep the atty moist enough to not allow them to overheat.
My own preferred method is with ultrasonics and phosphoric acid (ice machine cleaner). While the acid part sounds bad, it is also used to wash poultry down to kill the salmonella.