A while ago Jaguar World magazine had an article on rust proofing the XJS in the workshop section. I don't remember which issue it was in, and rather than spending hours trying to find it, I wondered if anyone knew right away which issue it was in. Please!
Bill

 

Is it the FEB 2000 article on buying an XJS where they mention going to Chris Parkinson at Before 'n' After Rustproofing?

 

As far as rustproofing is concerned, I can tell you for certain that waxing on its own will not do it.
I have found that layers work well: First a top quality rustkiller (AquaSteel is the best I have found, no doubt there are others); then a specialised anti-rust paint (zinc chromate or its modern equivalent is best); then wax. So far this has worked really well for me.

 

Rust-proofing implies you havn't rusted out your car yet, if you have problem areas or want to quickly seal in the underside etc I strongly suggest looking at Corroseal I just restored/renewed the underside of my truck, and salvaged a 70s BMW coupe with this stuff its miracle in a bottle. Marine/Industrial grade turns rust into a hardened black enamel like surface.

 

I discovered that in January 2017 Jaguar World had an article about rust proofing an XK8. I think I was confused in my memory and when I saw it originally must have thought the same thing could be done to an XJS.
Bill

 

Bill try this...

http://www.kwecars.com/wp-content/up...tionWebRes.pdf

 

The only way to prevent rust on an pre 91 xj-s is not to use it in the UK northeast/central US winters. Can't speak for later models or other parts of the world.