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
Bedrock 75W-80 Synthetic Transmission Fluid is a light-grade synthetic fluid for the Volvo I-Shift and Mack mDRIVE automated manual transmissions. These two gearboxes take the same fluid, and it is a lighter grade than many truck transmissions call for. The lower viscosity lets the fluid move quickly through the gear train at start-up and reduces the drag the gears work against, while the synthetic base keeps a protective film on gear teeth and bearings when the transmission is hot.
It suits the trucks these transmissions ride in: Volvo and Mack tractors on long-haul and regional routes, and Mack vocational trucks with mDRIVE working construction sites and refuse routes. In Texas heat the fluid must hold up through long hours at operating temperature, and on a cold start it must reach every gear and bearing fast. This fluid is formulated to do both and to protect the transmission against wear and corrosion between services.
Bedrock 75W-80 is the light-grade fluid in the Bedrock transmission family, matched to the I-Shift and mDRIVE. It is not a substitute for the fluids other automated transmissions call for: DT-12 gearboxes use Bedrock 75W-90 Synthetic AMT Fluid, and Paccar and Eaton automated transmissions use Bedrock SAE 40. For the drive axles on the same tractor, pair it with Bedrock 75W-90 Full Synthetic Gear Oil. It comes in the 5-gallon pail.
Sheets are sent by email on request.
Applications
- Volvo tractors with the I-Shift automated manual transmission on long-haul and regional routes
- Mack tractors with the mDRIVE automated manual transmission in highway and regional service
- Mack vocational trucks with mDRIVE on construction, dump and refuse work
- Fleets that run Volvo and Mack side by side and want one transmission fluid for both
- Owner-operators servicing their own I-Shift or mDRIVE gearbox
- Fleet shops and service dealers that stock fluid by transmission type
Performance
- Moves quickly through the gear train at cold start
- Keeps gear drag low, the way these automated gearboxes are designed to run
- Holds a protective film on gear teeth and bearings at operating temperature
- Protects internal parts against wear, rust and corrosion
- Resists breakdown through long hours of hot service
- Supports the smooth, repeatable shifts the transmission controller is set up for
Specifications
Formulated for use where a 75W-80 synthetic transmission fluid is specified for Volvo I-Shift and Mack mDRIVE automated manual transmissions. Full details are on the Product Data Sheet.
Typical properties
Typical properties for Bedrock 75W-80 Synthetic 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 | BED75W805G | Single |
Bedrock 75W-80 Synthetic 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 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 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
My truck has an I-Shift. Is this the fluid I need?
Bedrock 75W-80 is formulated for the Volvo I-Shift and Mack mDRIVE automated manual transmissions where a 75W-80 synthetic transmission fluid is specified. Check the transmission maker's service manual for your model and build, then match the fluid to it. If you are not sure, email [email protected] with the truck and transmission model.
Can I use 75W-90 gear oil in an I-Shift or mDRIVE instead?
No. Follow the transmission maker's specification: these transmissions call for a lighter fluid than a drive axle does, and a heavier oil changes how the automated gearbox behaves. Use Bedrock 75W-90 Full Synthetic Gear Oil in the drive axles and Bedrock 75W-80 in the transmission.
Does the fluid work for both Volvo and Mack?
Yes. The I-Shift and the mDRIVE are closely related transmissions and call for the same type of fluid. One pail covers both makes in a mixed fleet. Typical properties are on the Product Data Sheet, available on request.
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
More from Bedrock
Find a dealer
TTM Diesel in Houston stocks the line; more dealers are being added.
Read more →
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 75W-90 Synthetic AMT Fluid, DT-12
Synthetic 75W-90 transmission fluid for DT-12 automated manual transmissions in heavy-duty trucks
Read more →