I purchased a set of battery adapters off eBay for only a few dollars each. Now I can use my Bosch 18 volt batteries in every other brand of tool, so I can choose whatever tool I like irrespective of the brand.
It sounds like the dreaded VTEC cam gear rattle. Thicker oil, whether due to a different grade or colder environmental temperatures, will make it worse.
I used Castrol DX 5w40 diesel oil (it's SN rated) in my gas engine to clean it. Inside of my engine looked like new when I removed the valve cover, timing cover and sump.
ATM, I use the receiver as a pre-amp. It's connected to a couple of pro-grade amps. So, I've got about 10,000 watts @ 8 ohms spread over the 4 channels (Dolby pro-logic FTW).
The Yamaha RX-A2A meets all of your requirements and will sound great. Disclaimer: I'm still using the Yamaha RXV-890 that I purchased in 1995, so I might be biased towards Yamaha AV products.
I recently purchased an M7 digital tire inflator. It makes pumping my tires to 34psi a very quick and simple task. Also, it takes a watch battery, so there's less chance of battery leakage ruining it compared to others that use AAA batteries.
If you want some reasonably priced Australian made oil for your Prado, don't overlook Gulf Western. Their products are excellent: https://www.gulfwestern.com.au/product/euro-energy-5w-30/