[Kurt in NJ]

Yet in 1936 Ford introduced a fitting and oil grooves in the leaves to be lubricated with "spring" lube, which was ice machine oil(77%), talc, and a dash of ground asbestos, talc is a dry lubricant and polishing agent, ice machine oil is about the consistency of auto trans fluid----
Since I have been lubricating the springs with atf the ride has improved, handling on rough roads better, tires are staying on the road --- good trade off for perhaps less spring life, the nearly worn out front spring has survived 80 some years, if I only get 40 years out of a new one I will be happy ---- of course I have properly working shocks