I have a John Deere with a 3-cylinder Yanmar diesel engine. The OM calls for "preferred" John Deere Plus-50 10W-30 DEO. (The 5W-30 is called for below some unimaginable low temperature.)
I live in and operate the tractor in SC -- hot humid SC. Temperatures can easily reach 100+ degrees in the summer (not to mention lower 90's in late spring and fall.)
My question is "Should I continue to use the 10W-30 oil or switch to 15W-40 oil because of temperature?"
Any thoughts, feelings, rants, raves, criticisms, praises, etc., on the issue are welcome ....
Joe
I live in and operate the tractor in SC -- hot humid SC. Temperatures can easily reach 100+ degrees in the summer (not to mention lower 90's in late spring and fall.)
My question is "Should I continue to use the 10W-30 oil or switch to 15W-40 oil because of temperature?"
Any thoughts, feelings, rants, raves, criticisms, praises, etc., on the issue are welcome ....
Joe