I have a Cub Cadet Zero turn prosumer grade mower Z force SX54 with two Hydro Gear ZT3100 hydrostatic transmissions that turns the rear wheels.
Manual says dump the oil after first 75 to 100 hours then every 400 hours.
I did the first drain at 90 hours and I selected Amsoil hydrostatic transmission fluid 20W50 which claims that it is specifically designed for such Hydros. OEM manual says you can use any motor oil 20W50. I have mowed 15 hours since change and its all good.
My question is more on service interval. Amsoil says you can increase service intervals by 2x OEM recommendation which is every 400 hours now onwards with no mention of time based interval.
Can one really go 800 hours with this oil? I dont mind changing oil because of price but the complexity just makes me nervous. My mower has very strange placement of this HydroGear and changing oil is PITA. In any case I will forget the process as it will take me 12 years to get to recommended 400 hours and by that time mower's other items might give issues but just because I am a BITOG fan, I wanted to check how credible is the claimed 2x interval and how much it can be trusted.
https://www.amsoil.ca/p/amsoil-20w-...tBg0hOAwfYcc4evbg9x1YiF2WlaLGyTO1sGPIJGsv_Jt0
Manual says dump the oil after first 75 to 100 hours then every 400 hours.
I did the first drain at 90 hours and I selected Amsoil hydrostatic transmission fluid 20W50 which claims that it is specifically designed for such Hydros. OEM manual says you can use any motor oil 20W50. I have mowed 15 hours since change and its all good.
My question is more on service interval. Amsoil says you can increase service intervals by 2x OEM recommendation which is every 400 hours now onwards with no mention of time based interval.
Can one really go 800 hours with this oil? I dont mind changing oil because of price but the complexity just makes me nervous. My mower has very strange placement of this HydroGear and changing oil is PITA. In any case I will forget the process as it will take me 12 years to get to recommended 400 hours and by that time mower's other items might give issues but just because I am a BITOG fan, I wanted to check how credible is the claimed 2x interval and how much it can be trusted.
https://www.amsoil.ca/p/amsoil-20w-...tBg0hOAwfYcc4evbg9x1YiF2WlaLGyTO1sGPIJGsv_Jt0
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