Synthetic 50 WT Transmission Oil

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Synthetic 50 WT Transmission Oil

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Lucas Synthetic 50 WT Transmission Oil is designed especially for heavy duty truck transmissions but can be used in many other applications.

Common gear oils are mostly base stocks with little more than an addition of sulfur and phosphorus as a total anti-wear package. We at Lucas Oil Products consider this inadequate. Most heavy duty truck transmission manufacturers now consider sulfur and phosphorus to be potentially corrosive to copper and brass and consequently recommend against common gear oils for this reason. The other 50 WT we have tested, synthetic or otherwise, are pure base stock, we consider this also inadequate.

Lucas Synthetic 50 WT contains an exclusive additive concentrate derived from synthetic oil that ensures lower operating temperatures and better lubrication, especially to upper bearings and gears. This is a long lasting fluid that is far superior to conventional synthetic fluids and contains nothing that could be harmful.

Meets or exceeds API MT-1, Eaton Transmission Div., 164 rev 7, Mack Truck TO-A Plus, International Truck TMS 6816 and other applications requiring non-EP Lubricants.

Key Benefits

  • Long lasting fluid
  • Ensures lower operating temperatures and better lubrication
  • Contains an exclusive additive concentrate


  • #10146 - 1 Gallon (Case of 4) - 33 lbs
  • #10147 - 5 Gallon Pail (1 Pail) - 40 lbs
  • #10149 - 55 Gallon Drum (1 Drum) - 440 lbs
  • #10561 - Per Gallon Tote (1 Tote)


Product Spec Sheet Technical Data Sheet
Safety Data Sheet Safety Data Sheet

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Eric Whitehead uses Lucas Transmission Fix for Ford F-250

Dear Lucas,

I have a 1194 Ford F250 that has 179,000 miles on her.

I took it to have trans fluid changed and when I came back to pick it up they had the transmission out of it and said they were checking it out. They said it was slipping and the torkconverter was going out. They wanted $2,000.00 to fix it.

I told them to put it back together and the shop said the truck would not last a month. Well a month later it started shaking and not shifting right so I stopped and bought a bottle of transmutation additive of yours and put it in.

The truck runs better than the day I bought her. That was over 2 years ago and about 80,000 miles. Now I add some in every oil change and trans change.

Thank you,

Eric Whitehead

Knoxville, TN

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