It's definitely stuck. I read not to use lubricant though as it'll stay in and then go on the pad. What should I use to lubricate it? Without liquid in the system, should the Pistons just go all the way in with no force?
A bit of hydraulic fluid usually does the trick.
@andyp started
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It's definitely stuck. I read not to use lubricant though as it'll stay in and then go on the pad. What should I use to lubricate it? Without liquid in the system, should the Pistons just go all the way in with no force?