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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Shane Bland uses Lucas Transmission Fix for Dodge Truck


I have a small repair shop in Florida servicing marine and automotive. I only recently found your products, at a parts house. I was introduced by a customer who drives a Dodge truck. His transmission went dead and badly needed a rebuild. He asked me if I knew anything of Lucas porducts and could it get him a few more months on his transmission. I laughed telling him that transmission wouldn't get him home much less another day of service. He was adamant to try it so I told him to just hand me the cash he was about to throw away on the bottle!

Well, he tried it. Six months later he is still driving on that transmission! This unit was finished, 3000 RPM to make it move at a crawl! In a diesel no less. Lucas made it perfect in less than five minutes.

Another of my customers claims he gets five miles to the gallon better in his Toyota with it. So I had to try it. My Kawasaki now shifts like it never has! Your product is truly amazing! Now it is in every machine I run, as it always will be. I tell my customers, "If you don't believe in it, you haven't tried it!"

Thank you,

Shane Bland


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