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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Richard A. Lang uses Lucas Transmission Fixin his 1986 Chevrolet Caprice 2 door sport coupe

I have a 1986 Chevrolet Caprice 2 door Sport Coupe with an original 200 4R lock up torque converter automatic transmission with 170,000 easy driven miles on it. Reverse was haveing problems for a few years and finally quit all togeather. I thought I was going to have to buy a remanufactured transmission. I tried the LUCAS TRANSMISSION FIX and not only did reverse start working again but the entire shifting range greatly improved in both of the up shifts as well as the quick response of the down shifts. It took about two weeks for it to work it,s magic but WOW what an improvement for a 20 year old transmission. THANK YOU SINCERELY RICHARD LANG

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