Posted by John Allicaseover on November 15, 2015 at 16:03:54 from (174.60.55.127):
I have a bunch of tractors, 2 case VAC, a John Deere A, Oliver 70, Allis WC and CA, and I always change all the fluids, wash them, grease them etc etc. So I was talking to another tractor loving buddy of mine and I was telling him about this and he asked me what zinc additive I was using in my oil. I said zinc additive? He said the cam will wipe out if there isn't zinc additive in the oil because in 2009 or whenever the zinc was taken out of oil and all the new motor oil out there doesn't have it. Is this true? Do you have to add zinc to the motor oils or it will destroy the motors? What kind of oil does anyone run in the motors of the old tractors? Any help is appreciated. Thanks. Don't want to wreck a motor..
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