Synthetic 50 WT Trans Oil

Lucas Oil Products, Inc.

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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Lucas Transmission Fix Does the Trick for Honda Element

"I have a 2004 Honda Element with 166,000 miles on it. Just before I moved to Texas I had the Honda dealer in Maryland do a once over and change my Transmission fluid. After I had driven about 2500 miles the fluid level ran low. I discovered later that they had not changed the fluid correctly and for the next 2000 miles I had to continuously add fluid. Within a year the trans started to whine. Rather than go back to a Honda dealer I decided to try changing it myself after I researched the correct procedure. This time I used Lucas Transmission fluid. A friend back home who owns his own repair shop used to brag on this stuff, so I figured it wouldn't hurt. For this Honda you must drain the system and refill it 3 times and drive it to highway speeds between each fluid change, in order to get it right into all of the drive train. I immediately noticed on the first fill and drive that the tranny was shifting much smoother. After the final fill up I started drivin g it the 20 + miles to work every day on the Interstate. It was shifting much smoother and also was running much quieter than it did before. I love the stuff and now I am sure I will be able to get many more miles out of this car. Thanks Lucas!" -Gerard D. from Kilgore, TX
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