I just picked up a John Deere 757 with only 350 hours on it and am considering running synthetic in the 25 hp Kawasaki. The operator's manual says to run JD Plus 50 15W-40 in the Hydrostatic Transmission and wheel motors. Is it OK to run Mobil One 15W-40 instead? If not, is there an alternative to the JD juice? Will it hurt anything if I run 10W-40 in it?
Thanks to everyone for their help.