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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Pat Quinn uses Lucas Transmission Fix for 1997 Lumina

I have a 1997 Lumina with a 3.1 engine, 4 speed automatic with approx. 400,000 km on it. I used your Fuel Injector Cleaner and it caused a large increase in my gas mileage after the second bottle. My mileage low is 13.5 mpg to a high of 27 mpg, this must have included highway driving. Average gas, 18-20 mpg. 1997 Canada fuel consumption guide for new car buyers call for 20 mpg city and 38 mpg on the highway.

My car engine service light came on and it was diagnosed as overdrive slipping. I took it to two transmission dealers for road tests and they said it would have to be replaced. It would buck at 85 km on the highway. I put in your Transmission Fix after about 12 day the engine light went out and the tranny was operating better. THIS WAS 55,000 KM’S AGO!

All the products you sent and I tested, have improved the operating performance of the car.

I gave a sample of the Fuel Injector Cleaner to a 1999 Ford Crown Victoria owner, and his operating cost decreased. He was $1.00 to a $1.50 in fuel costs instead of $2.00 per $10.00 of income.

Pat Quinn


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