not same splitter but had some issues with mine that made it slow
hydraulic filter was horrible so lots of slower, a ram seal weeping, annoyingly had to get a bigger tank as original tank wasnt matched well to pump volume,, hydraulics place checked flow rate and was 19 litres a min at pump and way too small a tank so oil got hot and that kills performance
now got a 60 litre tank and doesnt matter how long i run it, how hard logs are never tops 25 celcious in summer in full sun and never drops performance
but an oil/filter change will tell you a lot as a good start