@Docnick. “Forget about additional corrosion protection on a car this age.”
I have to respond this way.
On the post just before this statement, I went through what anyone can do to delay rust on ANY car regardless of it’s age. It’s just a matter of your willingness to do it ( spray biodegradable oil) or have someone do it. IT WORKS.
Rusted body panels start from the inside 99% of the time. You can delay that as long as you treat that area inside by coating INSIDE THROUGH THE DRAIN HOLES and any plugs you can remove. It has nothing to do with undercoating which is useless. It takes very little oil !,On frames and any area left un painted, you can stop the rust with simple treatments there. WAXING DOES NOTHING to stop rust where it is the real problem, from the inside and on un painted components underneath. Waxing protects the paint. But, unless the paint is scraped off, it still prevents rust. Salt is corrosive to paint and a wax job does help preserve the paint as does washing. But, seldom does any rust start from the painted surface inwards. It starts from inside the panels where you cannot wax where the surfaces cannot be washed easily and but applied oils cut the o2 so rust cannot continue.
If you get a nick in the winter time that you can’t re paint, just put ( and keep) a dab of grease over it until warm weather. It will rust no further till you can get to repaint it. This is all simple stuff anyone can do on any car, any age. It doesn’t have to be messy or environmentally unsound. You need not be mechanically astute, just be willing to do it every other year at least…it might take 20 minutes per car.
“Hand wax and just make sure to keep it washed to prevent rust.” @BeckyNissan.
With all due respect,it reminds me of the days I used to teach…
;)))) hand waxing and washing the outside of a car helps the painted surfaces but will not prevent rust !
One discussion on rocker panels.