Synthetic 50 WT Transmission Oil

Lucas Oil Products, Inc.

Synthetic 50 WT Transmission Oil

  • {irecommend}

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

get adobe reader

Frank Nyberg uses Lucas Transmission Fix for 95 Mustang 3.8 liter V-6

My 95 Mustang 3.8 liter V-6 Automatic transmission with 82,000 miles, developed a shudder in the transmission. It also began to leak oil. I also noticed some slipping when cold. I had the transmission oil and filter changed. I was told it still had leakage from the rear seal. The mechanic told me to see if the tranny fluid change helped and if it did I could take care of the rear seal later. It seemed to help a bit but the shudder problem persisted and I still leaked oil. I took the car to a transmission shop. The technician told me it seemed that it was probably hydraulic and I should bring it in for their routine diagnosis process.

I looked for a second opinion from a mechanic friend. He told me to try Lucas Oil. He heard it was a miracle worker. I got a bottle of Lucas Transmission Fix. He was right. Shudder GONE, leak GONE, slip GONE. I read a testimonial from your web site. For his Ford he called it the "dreaded torque converter shudder". Finally a diagnosis and then the CURE. It sounds unbelievable but true. I have taken the car on three, 280 mile, one day trips. That, and 3,000 miles later and still no shudder.

Thanks to the Lucas famil

Frank Nyberg

Share Your Lucas Oil Story