Bedrock SAE 50
SYNTHETIC HEAVY-DUTY
TRANSMISSION FLUID
Synthetic SAE 50 heavy-duty transmission fluid for truck transmissions that call for an SAE 50 synthetic fluid
Bedrock SAE 50 Synthetic Heavy-Duty Transmission Fluid is the heavier of the two straight-grade fluids in the Bedrock transmission family. SAE 50 is a grade that many heavy-duty truck transmission makers have long specified for synthetic transmission fluid. Use it where the transmission maker calls for an SAE 50 synthetic heavy-duty transmission fluid. The fluid lubricates the gears, shafts and bearings and carries heat out of the gearbox.
Heavy haul, full loads on grades and long hours at operating temperature call for a heavier grade where the maker specifies it. The fluid holds a steady film between gear teeth under load and resists thinning when the gearbox runs hot. Its synthetic base helps it flow at start-up and resist oxidation in heat, so it keeps protecting the transmission between fluid changes.
Bedrock SAE 50 sits alongside Bedrock SAE 40, which is the lighter grade for Paccar and Eaton automated manual transmissions. The two are not interchangeable; the transmission maker's specification decides which one goes in. For the drive axles behind these transmissions, Bedrock offers 75W-90 and 80W-140 Full Synthetic Gear Oils and 80W-90 and 85W-140 Gear Oils. Bedrock SAE 50 comes in the 5-gallon pail, a size that suits shop use.
Sheets are sent by email on request.
Applications
- Heavy-duty truck transmissions where the maker specifies an SAE 50 synthetic transmission fluid
- Tractors on heavy haul and oilfield work, where the gearbox runs hot under high torque
- Loaded trucks on grades and in stop-and-go city work in Gulf Coast heat
- Gearboxes in older tractors and straight trucks whose maker specifies SAE 50
- Mixed fleets that keep one SAE 50 pail for every transmission that calls for the grade
- Owner-operators who service their own transmission and want a synthetic fluid in the specified grade
- Fleet shops and repair shops stocking transmission fluid by grade
Performance
- Holds a steady film between gear teeth under high torque and resists thinning through long hours at operating temperature
- Lubricates gears, shafts and bearings in heavily loaded gearboxes
- Carries heat out of the gearbox on long pulls
- Resists oxidation in hot service so the fluid keeps protecting between changes
- Protects against wear, rust and corrosion
- Flows at start-up with the help of its synthetic base
Specifications
Bedrock SAE 50 is a synthetic heavy-duty transmission fluid in the SAE 50 grade, recommended where the transmission maker calls for an SAE 50 synthetic transmission fluid. Full details are on the Product Data Sheet.
Typical properties
Typical properties for Bedrock SAE 50 Synthetic Heavy-Duty Transmission Fluid are listed on the Product Data Sheet (PDS), available on request.
Packages and part numbers
| Package | Part number | Case pack | |
|---|---|---|---|
| 5-gallon pail | BEDCD505G | Single |
Bedrock SAE 50 Synthetic Heavy-Duty Transmission Fluid comes in one package: the 5-gallon pail.
Order by part number from your dealer → Where to Buy
More in Transmission Fluids
Bedrock 75W-90 Synthetic AMT Fluid, DT-12
Synthetic 75W-90 transmission fluid for DT-12 automated manual transmissions in heavy-duty trucks
Learn more about Bedrock 75W-90 AMT (DT-12) →Bedrock 75W-80 Synthetic Transmission Fluid (Volvo I-Shift, Mack mDRIVE)
Synthetic 75W-80 transmission fluid for Volvo I-Shift and Mack mDRIVE automated manual transmissions
Learn more about Bedrock 75W-80 I-Shift/mDRIVE →Bedrock SAE 40 Synthetic Heavy-Duty Transmission Fluid (Paccar, Eaton automated)
Synthetic SAE 40 heavy-duty transmission fluid for Paccar and Eaton automated manual transmissions
Learn more about Bedrock SAE 40 Paccar / Eaton →Bedrock Full Synthetic Heavy-Duty ATF, Allison TES-668
Full synthetic heavy-duty automatic transmission fluid for Allison transmissions that call for TES-668
Learn more about Bedrock ATF TES-668 →Sizes and part numbers
| Product | 5 GAL |
|---|---|
| Bedrock 75W-90 Synthetic AMT Fluid, DT-1275W-90 AMT (DT-12) | BED75W90AMT5G |
| Bedrock 75W-80 Synthetic Transmission Fluid (Volvo I-Shift, Mack mDRIVE)75W-80 I-Shift/mDRIVE | BED75W805G |
| Bedrock SAE 40 Synthetic Heavy-Duty Transmission Fluid (Paccar, Eaton automated)SAE 40 Paccar / Eaton | BEDSAE405G |
| Bedrock SAE 50 Synthetic Heavy-Duty Transmission FluidSAE 50 | BEDCD505G |
| Bedrock Full Synthetic Heavy-Duty ATF, Allison TES-668ATF TES-668 | BEDUATF5G |
Swipe sideways to see every size →
Order by Bedrock part number from your dealer.
Frequently asked questions
Which transmissions take SAE 50?
The transmission maker's service manual or the tag on the gearbox tells you the grade and type of fluid it calls for. Many heavy-duty truck transmissions specify an SAE 50 synthetic transmission fluid; several automated transmissions specify SAE 40 or a multigrade instead. Match the grade to the specification, and when the manual is not at hand, email [email protected] with the transmission model.
Can I use SAE 50 engine oil in my transmission instead?
Only if the transmission maker allows it, and current synthetic transmission fluid specifications generally call for a dedicated transmission fluid. Engine oils are formulated for combustion by-products and piston rings; a transmission fluid is formulated for gear teeth, synchronizers and bearings. Bedrock SAE 50 is a transmission fluid, not an engine oil.
Is SAE 50 too thick for cold mornings?
In Texas and along the Gulf Coast, the grade is used year-round in the transmissions that specify it. The synthetic base helps it flow at start-up. For trucks that run into severe winter cold, follow the transmission maker's recommendations for your operating conditions.
Specifications and typical properties are stated on each product's data sheet; follow the equipment maker's service recommendations.
Equipment and specification names belong to their owners and identify the equipment the product is formulated for; they do not imply endorsement.
Other Bedrock families
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Find a dealer
TTM Diesel in Houston stocks the line; more dealers are being added.
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Data sheets
A PDS and an SDS for every product, sent by email on request.
Read more →
Request a quote
Write to [email protected] with the part numbers and quantities.
Read more →Bedrock SAE 40 Synthetic Heavy-Duty Transmission Fluid (Paccar, Eaton automated)
Synthetic SAE 40 heavy-duty transmission fluid for Paccar and Eaton automated manual transmissions
Read more →