Hi, I have a reduced voltage motor starter with the contacts submersed in oil. I am trying to find oil to add/change, any ideas what oil might be in the starter ? transformer oil ? Supply house said the oil is obsolete but they can get it in 4 oz containers at $60 bucks each, that will be very expensive seeing I need 5 gallons. This is an old Cutler Hammer starter you pull the arm forward to start the motor and when at speed push arm back to run.
There's a good chance that the 'oil' is actually PCB...that price of $15 per ounce sounds suspiciously like it's for PCB fluid. You might not be able to top it off...or even totally replace the starter without a LOT of regulatory paperwork and expense. I agree with the others and suggest that you determine exactly what you're getting into before you get in too deep.