Synthetic 50 WT Transmission Oil

Lucas Oil Products, Inc.



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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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Scott Barnard uses Lucas Transmission Fix for 1984 Nissan/Datsun 300ZX

Dear Lucas Team:

I bought my 1984 Nissan/Datsun 300ZX in early 2000. I have sunk a good amount of money into it within these years, I am a "Z-lover", and intend on keeping the car for many years to come. My Z has over 135,000 miles on it (and to all the enthusiasts out there, it's a non-turbo) and has an automatic tranny. My 4th gear clutch pack is going and two tranny experts told me that it needs to be rebuilt, not just the clutch pack, but the whole thing! $1,800.00 to do the job (from both).

Lately, the converter seemed to chatter like false teeth when changing gears, and when it wasn't chattering, the tranny seemed to be confused as to which gear it should be in! So, I went to a Carquest, and asked the clerk for a "miracle in a bottle", something just for a quick fix, knowing the tranny had to be re-built. But before I asked, I pondered on which chemical to buy. He immediately brought me over to your product, Lucas Oil Transmission Fix, which was twice the price than the rest of the other products. I thought "Hmmm...", and was skeptical. He told me this stuff sells like hotcakes, and that I won't be disappointed. I bought your Transmission Fix, brought it home, filled the tranny, drove it, called the clerk back and said "Holy #@!* !, is this the way my tranny is supposed to act?" The clerk said, "See, I told you so..."

I fell in love with my Z all over again!

Thanks, guys!

Scott Barnard

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