I miss the days of RustyJones, AutoArmor, and Ziebart. There were plenty of shops in the Northeast. Just about every new car in the 80's to early 90's that everyone bought received one of these. It was the only was to keep the winter road salt from eating the vehicle. Now, we just purchase disposable vehicles.
Looks like I'm going to have to call some of the shops in Canada and see if I can make a weekend appointment. Have some friends that are interested too. Could be a fun trip, and get the vehicles "Crown'd" while we're up there.
With the 'raw linseed' oil, do you spray it straight from the can or dilute it with something, at at what ratio? Sounds like an economical method for an older car.
I do make an effort to use a car wash regularly. And, the undercarriage wash includes a "Simoniz" rust inhibitor, which according to the faq sheet is good for 2 months. So, my weekly car wash should keep me somewhat protected for now.