I only use
AMSOIL Synthetic Oil in my X738. Have no use for JD oils, they are just repackaged oil company brands, e.g. Esso (Canada), Chevron and Philips 66.
Who Makes John Deere Lubricants
Source - MSDS
John Deere Hygard Transmission & Hydraulic Fluid Esso Petroleum Canada
JD Turf Gard 10W/40 John Deere Limited
John Deer Turf-gard 4-Cycle Motor Oil (All Grades) Phillips 66
John Deere Turf Gard Motor Oil 5W-30, 10W-30 Chevron Texaco Global Lubricants
John Deere Turf-Gard 4-Cycle Motor Oil 10W-30 Esso Petroleum Canada
John Deere Turf-Gard 4-Cycle Motor Oil 10W-40 Esso Petroleum Canada
John Deere Turf-Gard 4-Cycle Motor Oil 10W-40 Chevron Texaco Global Lubricants
John Deere Turf-Gard 4-Cycle Motor Oil 5W-30 Esso Petroleum Canada
John Deere Turf-Gard Supreme Motor Oil, SAE 10W-30 Conoco Lubricants, a division of ConocoPhillips