Customers 2005 Cub Cadet GT3200 w/ Kohler horizontal 25 hp V-Twin- Mobile one 0w40/Wix filters
My 1975 WheelHorse D-200 w/ 55 cubic inch solid cast iron Kohler K-Series opposed twin - Mobil One 0w40 every 50 hrs/no filter/3215 hours;
Sunstrand hydraulics direct drive off flywheel- 6 qts. Mobil One 10w40/Wix 51410 filter. Tractor used vary hard grading 18 acre boat yard and plowing with 5 ft blade in winter, about 300 hrs per year.
My 1978 WheelHorse C-121 Hydro - 31 cubic inch cast iron Kohler K-Series/Sunstrand 900 series hydro...Mobil One 0w40 every 50hrs, 42 inch RD deck mows 5 acres a week plus box blading and some plowing with a 54 inch blade...things a beast
My 1990 WheelHorse (bought new) 212-h with an Onan 12.5 hp single, 975 hrs, mobile one 0w-40 (100 hr changes)/ Napa gold filter 1394/Eaton 750 hydro (dual motors) not changed, used mainly as a brush hog around the boatyard, hauling gravel and wood (I fill a 17 CF trailer with 3/4 gravel 'till its running over with my loader...its funny, gotta kinda bounce forward to steer)...very tough deck as well.
The rest well stay in storage most likely...I may break out my 1995 520-H with 60 original hrs later in the season as it is like a Cadillac to mow with.