From doing a search, I have read the different threads and the opinions on rustproofing, pro and con. So, I hope that I am not boring folks by asking in regard to my 2016 Hybrid Limited. Yes, here in Pa., depending on the severity of the winters, a considerable amount of chemicals are used on the roads. We plan on keeping our RAV4 for a long time, at least for over 100,000 miles plus. I plan to use the hand-held pressure washer at the car wash to remove as much of the salt/chemicals as possible during the winter weather. And, I am aware that the metal on the cars today go through a phosphate bath, supposedly, and I understand that more galvanized parts are used than years ago. I don't know how the Toyota stacks up against other manufacturers as far as parts not rusting out, but with my 2002 Subaru, the frame rusted out underneath at 65,000 miles so badly that it would not pass inspection and it had not been rustproofed. They wanted $1750 to replace the parts. I decided to trade it along with a Lincoln to buy the RAV4. The dealer was aware of the rust. I am not one to do any rustproofing myself, and the dealer wants $300. I realize that it would have to be done before winter, it has only 310 miles on it now. I suppose that $300 is worth it now rather than a couple thousand later to replace parts?