They are trying to take advantage of you. We are all hurting in this economy and companies are putting alot of pressure on their sales people to sell billable work. Truly needed or not.

You don't change the oil in hydraulic elevators in this industry unless it's contaminated (water or dirt got in the tank) or it's been severely burnt (catastrophic motor burn up/welded contactors). I've been installing hydraulic elevators for 15 years and have never changed oil in one. I've taken care of and maintained hundreds of hydraulic elevators that are up to 60 plus years old with the same oil and they run fine and have no reason to change it. It's not like a combustion engine where it's being contaminated. I honestly don't think it needs to be changed. I agree with solidstate on this one..

For what its worth, I'm on the east coast and oil today is roughly 11.25 a gallon.