hydro/tranny oil

dirt clod · Sep 15, 2008

What would be best for me to use in my HOT cimate for my L3300 gst?

AMSOIL - Synthetic Tractor Hydraulic/Transmission Oil (ATH)

Texas Refinery Corp. Specialty Lubricants and Greases TRC

Texas Refinery Corp. Specialty Lubricants and Greases TRC

ChevronTexaco Synthetic All-Weather THF

dirt clod · Sep 15, 2008

Sorry, left out the stock oils. UDT and SUDT. Whats best for my tractor and climate out of these 6?

john_bud · Sep 15, 2008

Probably the SUDT or the synthetics.

jb

crashz · Sep 16, 2008

All of those would be fine.

I've had a noticable change with the TRC Special 303 Fluid in my tractor. I was getting a little pump cavitation with the power steering, with new JD Hyguard. Switching to the TRC fluid has silenced the pump. Otherwise, overall operation of the tractor is the same. It might have quieted the entire machine slightly, but its tough to tell.

By the numbers alone, the Special 303 and UTF Red look almost identical. Out of the selection that you have, I would personally go fro the UTF red.

DieselPower · Sep 17, 2008

For hot weather I would use the UTF Red. It is a 10W/30 oil where most others are a 10W/20 viscosity. The slightly higher viscosity at operating temperature helps to reduce hot soak problems like pressure loss while still being a 10 weight at start up. Additionally it has a tackafier additive that makes it more adhesive than regular UTF fluids. In common sump systems where the hydraulic system fluid also lubricates gears it allows more oil to cling to the gears providing additional cushioning against shock loading.