Synthetic 50 WT Trans Oil

Lucas Oil Products, Inc.

Synthetic 50 WT Transmission Oil

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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I would like to say a BIG thank you for your product

Good afternoon, I would like to say a BIG thank you for your product, Lucas Oil transmission fix. This product saved our vacation. Here is our story. Last Wednesday, we set out in our motorhome from our home in Paris Ontario Canada heading to Talladega AL for the NASCAR weekend. we made it as far as Walton KY and started having severe transmission troubles. The transmission was leaking fluid, shifting very rough and slipping like crazy. We thought we were done. We lost all day Thursday trying to get repaired and still make it on time to Talladega for the weekend. After we were repaired, it did not take long down the road and it was evident the leak was stopped but there were much greater issues inside the tranny. We stopped at a Walmart store and I picked up 2 bottles of your product, Lucas Oil transmission fix. The results were instant. Shifting smoothed out and the slipping almost disappeared entirely, . While it wasn't a total fix for the problem, it allowed us to carry on, stopping every 2 hours to add a bit more. We made it to Talladega in time for the races and had a fantastic time as always. On the trip home, I wasn't sure how far we would get but we would try and make it home. I picked up a couple more bottles of your product and we set off Monday morning for the 910 mile trip home. Well, same plan, stopping every 2 hours to top off with more of your transmission fix, we made it all the way home safely today. We had a basically dead transmission and this stuff was incredible enough to keep our 34ft motorhome going for 1375 miles through the hills of Kentucky and the mountains of Tennessee. We made it home in time to see my mechanic and he was astounded how far we made it with a stick transmission, I consider this stuff "liquid gold". We still need to replace the tranny, but now we are home safe and sound and best of all, our vacation was not ruined due to a mechanical breakdown, thanks to YOU. A really BIG thank you for a superb product, it sure saved our day (and trip!) I know how much you support motorsports as we are big NASCAR and World of Outlaws fans, So here is our chance to say THANK YOU for what you do. Sincerely, Scott & Christine Misener, Paris, Ontario Canada
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