So I purchased my dht 30 splitter in February this year and after about 8-10 hrs of use I noticed the seal around the ram on the cylinder was leaking oil out. I called customer service and thinking they would just send me a new seal to replace my self they gave me the option to take it to a shop have it replaced and get them the bill or they would send me a whole new cylinder. New cylinder is in the process of shipping now. I can honestly say that dirty hand tools customer service is outstanding. Makes me happy to know they are willing to stand behind their product!