How can you visually identify a single v. double-action shock. I have a 1949 3800 dually. I know the double actions were an option.
Also, I saw for sale on Chev's of the 40s shock absorber fluid. Never had seen that before. Is that the correct fluid that should be replaced in those shocks? Any way to know if they need a rebuild? Anything to look for in the way of function/maintenance/rebuild?
Dumb questions just never had to deal with any shocks like this before.
