Wagon rear = dust magnet

[K1W1]

The number of cars I remember seeing with rusted out tail gate bottoms that were fitted with dust diverters leads me to think that they were probably as effective as a Mars Bar in a knife fight.

Rust was a standard factory fit in cars made in the 1970s. You could find rust somewhere on almost any vehicle within months of it going on the road. Tailgates and doors rusted out because the drainage in them was useless. They would get water inside and it would just sit there bouncing around and keeping the inside of the door damp until finally a rust hole appeared somewhere. The standard thing to do with any 1970s vehicle was to get a drill and drill out the drain holes to a decent size as soon as possible so they would not block up.

[BottomScratcher]

The standard thing to do with any 1970s vehicle was to get a drill and drill out the drain holes to a decent size as soon as possible so they would not block up.

The optional thing to do, which I did on all of my cars, was to pressure spray inside the panels with fish oil - never thought I'd be taking it myself one day, but that's another story. The cars stank for about 3 days, but body rust was never an issue. The only rust related issue I ever had since doing the fish oil thing was having to remove the rear window on an XA Falcon Hardtop. Those huge dished out windows had swimming pools at the bottom corners.

[K1W1]

The optional thing to do, which I did on all of my cars, was to pressure spray inside the panels with fish oil - never thought I'd be taking it myself one day, but that's another story.

Fisholene was the brand we used to use. You still had to drill the drain holes otherwise you ended up with a swimming pool in the bottom of each door albeit a pool with a semi rustproof liner.

[zei20t]

Harry Potter keeps mine clean with magic.

I also wash my car, that helps!