Bedrock 85W-140
Gear Oil
Heavy SAE 85W-140 gear oil for drive axles and gear cases in warm-weather, heavy-load service
Bedrock 85W-140 Gear Oil is the heaviest grade in the Bedrock gear oil lineup. It is a heavy multigrade gear oil for drive axles, differentials and gear cases whose maker lists an 85W-140 for the load and climate the equipment works in. At operating temperature a 140 grade holds a thicker oil film between the gear teeth than a 90 grade, which matters when the gears turn slowly under a heavy load.
The Gulf Coast gives this grade plenty of work. Vocational trucks, farm tractors, construction equipment and older heavy trucks spend the summer loaded in high ambient heat, often at low road speed. In that service the oil protects the ring and pinion, the bearings and the gear case against wear, and it protects the housing against rust and corrosion when the equipment is parked between seasons.
An 85W-140 flows more slowly at start-up than the lighter grades, so follow the temperature range the equipment maker's chart gives for it. Where the chart lists 80W-90, Bedrock 80W-90 Gear Oil is the lighter companion. Where the chart lists a 140 grade and the fleet wants a full synthetic for hot, loaded on-highway work, Bedrock 80W-140 Full Synthetic Gear Oil is the alternative.
Sheets are sent by email on request.
Applications
- Drive axles and differentials on vocational trucks that work loaded in Gulf Coast summer heat.
- Farm tractor and implement gear cases, final drives and differentials whose maker lists an 85W-140.
- Construction equipment axles and gear cases working slowly under heavy load on the job site.
- Older heavy trucks whose axle manual lists an 85W-140 for warm-weather service.
- Heavy-haul and oilfield trucks at low road speed where the equipment maker calls for a 140 grade.
- Shops and parts counters that keep a heavy gear oil on the shelf for walk-in axle and gear case service.
Performance
- Holds a thick oil film between gear teeth that turn slowly under heavy load.
- Protects the ring and pinion, bearings and gear case against wear and scoring in hot, loaded service.
- Resists thinning at high operating temperature so the film stays on the gears through the work day.
- Leaves a protective film on gears, bearings and housings that resists rust and corrosion while equipment sits between seasons.
- Controls foam in the gear case at road speed.
Specifications
Bedrock 85W-140 Gear Oil is an SAE 85W-140 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 85W-140 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 | BED85W1405G | Single |
Bedrock 85W-140 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 75W-90 Full Synthetic Gear Oil
Full synthetic SAE 75W-90 gear oil for truck drive axles and differentials
Learn more about Bedrock 75W-90 →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 →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
Will a heavier gear oil quiet a noisy rear end?
A heavier oil does not fix the cause. Whine, clunk or growl usually point to worn gears, worn bearings or a gear set out of adjustment. Have the axle inspected before the damage spreads, and use the grade the axle maker lists for your service.
Can I run 85W-140 year-round on the Gulf Coast?
Check the temperature range the axle or equipment maker's chart gives for 85W-140. Many charts list it for warm and hot weather, and the Gulf Coast climate fits that range most of the year. On the coldest mornings a heavy grade flows more slowly at start-up, so follow the chart rather than a habit.
Can I use 85W-140 in my truck's manual transmission?
Only if the transmission maker lists an 85W-140 for it. Most heavy truck manual transmissions call for a transmission fluid rather than an axle gear oil, and a heavy oil can make shifting stiff when cold. For a gearbox whose maker lists 80W-90, see Bedrock 80W-90 Gear Oil. For automated manual transmissions, see the Bedrock transmission fluids.
Specifications and typical properties are stated on each product's data sheet; follow the equipment maker's service recommendations.
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 80W-90 Gear Oil
SAE 80W-90 gear oil for drive axles, differentials and manual gearboxes
Read more →