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According to the Progressive web site videos, the monotubes get oil but just for spring lubrication. There are springs and a gas charged sealed cartridge. The original equipment has a dampner that uses the oil to cause resistance in the dampners and controls the rate of compression.
I also called Progressive and verified what some of you have said...
"Monotubes utilize sealed, maintenance free cartridge and the only thing that oil does is lubricate the spring. The fork oil never needs to be changed"
I called my Indy who apologized for the mix up and made it right.
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