I have a C500 which uses up the entire cylinder of fluid withing a few moments of actual work. It will sit all night no problem. However, Once in use, actually depressing the pedal, it will use up all the fluid in the cylinder until it doesn't work anymore. The odd thing is there is absolutely no fluid on the ground or anywhere visible on the machine: ie a leak. So does anyone know where the fluid is going? or where the Leak could be? This seams very odd to me, however I am no forklift expert. Thanks in advance for any help!