I have used Connolly's hide food once a year for the last 40 years on my
S-Type and the seats are as good as new.

A UK web site is below but I am sure you can get it in Canada

http://www.saddler.co.uk/acatalog/Connolly_Hide_Food_for_Leather.html

The wood is slightly more difficult as what you are really protecting is the
lacquer that protects the wood!
I use a beeswax polish, but the only real way to keep it looking gorgeous is
to keep the sun off it. If you get a lot sun were you live then use blinds
on the windows when you park.

Peter