Just prior to leaving our Winter Home, we had a Boss shop change oil, lube & replace the Cat fuel filter. Since we do not know if the P O replaced the hydraulic filter & we had one we thought it would be a good time to. The filter is located left side of the engine compartment, below the reservoir & cooler. Before the Tech could get the old one off, we lost 2-3 qts of fluid & he quickly spun it back on. We could not find a way to isolate the filter. Crimping the line was discussed, but no one wanted to risk damaging the hoses. Are we looking at a complete fluid change to replace the filter or did we miss something?