Bedrock 75W-90
FULL SYNTHETIC
GEAR OIL
Full synthetic SAE 75W-90 gear oil for truck drive axles and differentials
Bedrock 75W-90 Full Synthetic Gear Oil is a multigrade gear oil for the drive axles of heavy trucks. It lubricates the ring and pinion, the carrier bearings and the inter-axle differential on tandem drives. The full synthetic base oil keeps the oil flowing at cold start and holds its body at highway operating temperature, so the gear set gets a steady oil film from the first mile of the day to the last.
Line-haul tractors, regional day cabs and vocational trucks run their axles hot and loaded for long stretches. In that service a 75W-90 does two jobs: it protects the hypoid gear teeth where they slide under load, and it carries heat away from the bearings. It also resists foaming at highway speed and protects the gear case against rust when the truck sits.
In the Bedrock gear oil lineup, 75W-90 is the lighter full synthetic grade and a common choice for on-highway drive axles whose maker lists a 75W-90. Bedrock 80W-140 Full Synthetic Gear Oil is the heavier full synthetic grade for axles that call for a 140 grade. Axle makers set their own drain schedules; follow the schedule in the manual for your type of service.
Sheets are sent by email on request.
Applications
- Drive axles on line-haul tractors that run loaded at highway speed day after day.
- Tandem drive axles and inter-axle differentials on regional and vocational trucks.
- Single drive axles on straight trucks, day cabs and heavy-duty pickups whose maker lists a 75W-90 gear oil.
- Fleet shops standardizing on one full synthetic axle oil for mixed on-highway equipment.
- Trucks that start cold and leave loaded, where a lighter grade turns the gear set more easily at start-up.
- Oilfield and construction haul trucks that move between job sites on the highway.
Performance
- Protects hypoid gear teeth against scoring and wear where they slide under load.
- Flows readily at cold start, so the pinion and carrier bearings are oiled from the first turn of the driveshaft.
- Holds its viscosity at highway operating temperature and resists thinning as the axle heats up.
- Resists oxidation and thickening in long, hot service, which helps the oil hold its grade between changes.
- Controls foam at highway speed so the gear set runs in oil, not air.
- Protects gears, bearings and the axle housing against rust and corrosion during storage and downtime.
Specifications
Bedrock 75W-90 Full Synthetic Gear Oil is an SAE 75W-90 gear oil. The specifications it is formulated to meet are listed on the Product Data Sheet, available on request.
Typical properties
Typical properties for Bedrock 75W-90 Full Synthetic Gear Oil are listed on the Product Data Sheet, available on request at [email protected] or [email protected].
Packages and part numbers
| Package | Part number | Case pack | |
|---|---|---|---|
| 5-gallon pail | BED75W905G | Single |
Bedrock 75W-90 Full Synthetic Gear Oil comes in one package size: 5-gallon pail.
Order by part number from your dealer → Where to Buy
More in Gear Oils
Bedrock 80W-90 Gear Oil
SAE 80W-90 gear oil for drive axles, differentials and manual gearboxes
Learn more about Bedrock 80W-90 →Bedrock 80W-140 Full Synthetic Gear Oil
Full synthetic SAE 80W-140 gear oil for drive axles that call for a 140 grade
Learn more about Bedrock 80W-140 →Bedrock 85W-140 Gear Oil
Heavy SAE 85W-140 gear oil for drive axles and gear cases in warm-weather, heavy-load service
Learn more about Bedrock 85W-140 →Sizes and part numbers
| Product | 5 GAL |
|---|---|
| Bedrock 75W-90 Full Synthetic Gear Oil75W-90 | BED75W905G |
| Bedrock 80W-90 Gear Oil80W-90 | BED80W905G |
| Bedrock 80W-140 Full Synthetic Gear Oil80W-140 | BED80W1405G |
| Bedrock 85W-140 Gear Oil85W-140 | BED85W1405G |
Swipe sideways to see every size →
Order by Bedrock part number from your dealer.
Frequently asked questions
My axle manual lists 80W-90. Can I use 75W-90 instead?
Both grades have the same viscosity grade at operating temperature; the 75W flows more easily when cold. Check the axle maker's lubricant chart. If it lists a 75W-90 for your temperature range and the specification it calls for appears on the Bedrock Product Data Sheet, you can use it. If the chart lists only 80W-90, use Bedrock 80W-90 Gear Oil.
Is this the right oil for my manual transmission?
Bedrock lists 75W-90 Full Synthetic Gear Oil for drive axles and differentials. Truck transmissions take the fluid their maker specifies. For a manual gearbox whose maker calls for an 80W-90 gear oil, see Bedrock 80W-90 Gear Oil. For automated manual and automatic transmissions, see the Bedrock transmission fluids.
How do I switch an axle to Bedrock 75W-90?
To switch an axle to Bedrock 75W-90, drain it warm, refill to the level the axle maker specifies and note the change in the service record.
Specifications and typical properties are stated on each product's data sheet; follow the equipment maker's service recommendations.
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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.
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Request a quote
Write to [email protected] with the part numbers and quantities.
Read more →Bedrock 80W-140 Full Synthetic Gear Oil
Full synthetic SAE 80W-140 gear oil for drive axles that call for a 140 grade
Read more →