Engine, transmission bull gear oils

[William Eccles - Jardine]

As I am reading and ingesting different information about oils for tractors; I am left with a few interesting questions.
(A side note: I run semi synthetic in my Dodge 3.9.)
I am wondering about // since I am fully rebuilding all the tran/ dif and bull gear bearings// would there be any advantage in using all synthetic in these sumps?
I seam to be coming up with verrious answers.
I address this Question to those who know oils and new bearings.
Thank you.
Wm.
 

[old]

Only thing I can see that would hurt or help to do so is your back pocket and it would hurt there. If you where say running a $25,000 car or truck yes it would help but your running a $2500 tops very old tractor so for what a tractor does the tad bit of help it might do would take 50 plus years to get back out of it if even by then. Your call but but if it where me I would stick the he good old stuff and save a few $$$
 

[David G]

I would not believe it would hurt a thing, except will make leaks worse. It would help if you keep the tractor out in the cold.

It is a lot of money to spend.
 

[Janicholson]

I like synthetic oils in vehicles that deserve it. New, and newly rebuilt do. Make sure future owners or?? know what is used in it. I think synthetic engine oil helps prevent fouling and prolongs engine life. It sure is low ash. Jim