ZD 331 just hit 400 hours. Going to change the HST and hydraulic oil filters. Do I need to change the fluid too? Watched some youtube videos and all they did was change the filters and added fluid they lost when doing the change.
Thanks.I think the 400 hour service interval is a major one I'd change all the fluids. These machines run hot. I notice that mine runs better/smoother/quieter after all the fluids are changed.
Before you think about cheaping out, I noticed at the dealership recently they had my 2010 ZD326 on sale used for the same price I paid for mine in 2010. Mine looks in better shape too.
New machines are stupidly priced IMHO.
Good. I already have Mobil 1 Synthetic 80W90 gear oil for the cars.Mower gear case
0.4 L / 0.4 U.S.qts / 0.4 Imp.qts
SAE 90 gear oil (API service classification: more than GL-3)
80W90 gear oil in mine. I think the service interval is 150hrs between oil changes, inspect every 50.