We had a job last year 4 stop hydo in ground jack above ground pipe run. Friday all was well Monday morning car wouldnt even reach the 3rd floor! I sent a crew with 40 gallons of oil and instructions to preform a 2 hour no load test. The elevator held steady so we brought in weights loader her up and left the car down till the next day we also preformed pressure relife test on the stop ring all with out the loss of a drop of oil! 3 weeks later the same thing!!!!! We did all the above again includeing full weights for a weekend still held steady. We put hasps and locks on the tank lid and all oil loss stoped. Apparently someone on this site had a peice of equipment at home with a major oil leak.
