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
Bedrock SAE 40 Synthetic Heavy-Duty Transmission Fluid is a straight-grade synthetic fluid for Paccar and Eaton automated manual transmissions that specify a synthetic SAE 40 transmission fluid. These gearboxes call for a transmission fluid made for them rather than a multigrade axle oil. The fluid lubricates the gears, shafts and bearings, carries heat out of the gearbox and helps keep the internal parts clean so the transmission can shift as its controller intends.
Tractors pulling loaded trailers, regional trucks shifting through traffic all day and vocational chassis at the job site all work the fluid hard. An SAE 40 fluid holds a steady film at full operating temperature while staying fluid enough to reach every part of the gear train. It is formulated to resist oxidation in hot service and to protect against wear and corrosion between fluid changes.
Within the Bedrock transmission family, Bedrock SAE 40 is the fluid for Paccar and Eaton automated manual transmissions. Bedrock SAE 50 is the heavier grade for transmissions that call for an SAE 50 synthetic fluid, Bedrock 75W-90 Synthetic AMT Fluid covers the DT-12, and Bedrock 75W-80 covers the Volvo I-Shift and Mack mDRIVE. For the drive axles, the usual companion is Bedrock 75W-90 Full Synthetic Gear Oil. Bedrock SAE 40 comes in the 5-gallon pail.
Sheets are sent by email on request.
Applications
- Paccar automated manual transmissions in on-highway tractors and regional trucks
- Eaton automated manual transmissions in heavy-duty tractors and straight trucks
- Line-haul tractors running loaded through Gulf Coast heat
- Regional and pickup-and-delivery trucks that shift through traffic all day
- Vocational trucks with Eaton automated transmissions on construction and oilfield work
- Fleet shops that stock fluid by transmission type and service to a schedule
- Owner-operators who service their own automated gearbox
Performance
- Lubricates the gears, shafts and bearings of the automated gearbox under load
- Holds a steady film at full operating temperature while staying fluid enough to reach every part of the gear train
- Carries heat out of the gearbox on long pulls
- Resists oxidation and thickening in hot service
- Protects against wear, rust and corrosion between fluid changes
- Helps keep internal parts clean so the transmission shifts as its controller intends
Specifications
Formulated for use where a synthetic SAE 40 heavy-duty transmission fluid is specified for Paccar and Eaton automated manual transmissions. Full details are on the Product Data Sheet.
Typical properties
Typical properties for Bedrock SAE 40 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 | BEDSAE405G | Single |
Bedrock SAE 40 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 50 Synthetic Heavy-Duty Transmission Fluid
Synthetic SAE 50 heavy-duty transmission fluid for truck transmissions that call for an SAE 50 synthetic fluid
Learn more about Bedrock SAE 50 →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
What is the difference between Bedrock SAE 40 and Bedrock SAE 50 transmission fluid?
The grade. Bedrock SAE 40 is the lighter fluid and is formulated for Paccar and Eaton automated manual transmissions that specify it. Bedrock SAE 50 is the heavier grade for transmissions that call for an SAE 50 synthetic fluid. Follow the transmission maker's specification for your model; the two grades are not interchangeable.
Is a single-grade SAE 40 fluid all right in cold weather?
Where a transmission maker specifies a synthetic SAE 40 fluid, it is normally the year-round fluid for that transmission, and the synthetic base helps it flow at start-up. In Texas and along the Gulf Coast, cold starts are rarely a concern. For operations in severe cold, check the transmission maker's service manual.
Can I use it in a manual Eaton transmission?
Use the fluid the transmission maker specifies for your model. Bedrock SAE 40 is formulated for Paccar and Eaton automated manual transmissions. Transmissions that call for an SAE 50 synthetic fluid take Bedrock SAE 50. If the service manual is not at hand, email [email protected] with the transmission model.
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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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.
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Request a quote
Write to [email protected] with the part numbers and quantities.
Read more →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
Read more →