Eaton Endurant HD vs Eaton Endurant XD
Specs, oil interval and warranty compared
Transmission comparison
The Eaton Cummins Endurant HD is a 12-speed overdrive (or 11-speed direct drive) rated up to 1,850 lb-ft and 110,000 lb. The Endurant XD is an 18-speed rated at 1,650 or 1,850 lb-ft and 166,000 lb. The XD weighs 808 lb against 657 lb for the HD, holds 25.4 pints of oil against 16, and lists a 500,000-mile or 5-year oil interval on the highway. The HD lists up to 750,000 miles, on a different basis. Eaton Cummins prints a warranty for the HD only.
Figures for Endurant HD vs XD are taken from the makers' own published documents. Last reviewed November 3, 2026.
Endurant HD vs XD: side-by-side specs
| Spec | Eaton Endurant HD | Eaton Endurant XD |
|---|---|---|
| Speeds | 12 forward (overdrive) or 11 (direct drive); 1 or 2 reverse | 18 forward, 3 reverse |
| Max engine torque | 1,850 lb-ft (1,750 lb-ft direct drive) | 1,650 or 1,850 lb-ft |
| Max GCW | 110,000 lb (80,000 lb direct drive) | 166,000 lb |
| Weight | 657 lb (660 lb with dual PTO) | 808 lb |
| Overall ratio | 18.85:1 (overdrive); 14.43:1 (direct drive) | 20.46 (20.5:1) |
| First gear | 14.43 | 14.32 |
| Top gear | 0.77 (12th) | 0.70 (18th) |
| Oil | Eaton PS-386 | Eaton PS-386 |
| Oil capacity | 16 pints (7.57 L) | 25.4 pints (12 L), coolerless, no PTO |
| Oil interval | Up to 750,000 miles (one interval on the page) | 500,000 miles or 5 years on highway; 250,000 miles or 3 years vocational; 2,500 hours or 3 years stationary |
| PTO | 385 lb-ft combined; 8-bolt, and 4-bolt on the 12-speed overdrive | 160 hp and 610 lb-ft combined; 4-bolt and 8-bolt |
| Warranty as printed by the maker | Linehaul: transmission 5 years or 750,000 miles; clutch 3 years or 350,000 miles | Not stated on the pages we read |
Full detail for each transmission: Eaton Cummins Endurant guide.
What actually decides Endurant HD vs XD?
We do not name a winner in Endurant HD vs XD. There is no independent, like-for-like study of fuel economy or reliability for these transmissions. These are the facts that decide it for a given truck and duty cycle.
- Weight and torque decide the family
- The HD tops out at 1,850 lb-ft and 110,000 lb. The XD lists 166,000 lb, and it is 151 lb heavier. If your loads and engine stay under the HD limits, the HD is the lighter choice. If they do not, the XD lists 166,000 lb and the XD Pro lists no limit.
- The oil intervals are not a like-for-like contest
- The HD page gives one interval, up to 750,000 miles. The XD page splits it by duty: 500,000 miles or 5 years on the highway, 250,000 miles or 3 years vocational. The 750,000 on the HD page is not proof that the HD oil lasts longer than the XD oil. Read the table for the exact model.
- Count the oil and the cooler
- The XD holds 25.4 pints against 16 for the HD, so an oil change costs more oil. Eaton Cummins says the XD needs no transmission cooler when the combined weight is under 110,000 lb. The HD page describes a cooler-less design.
- Get the XD warranty in writing
- Eaton Cummins prints HD terms: 5 years or 750,000 miles on the transmission for linehaul. The XD pages we read print none. Ask for the written coverage on the exact truck.
Put your Endurant HD vs XD oil changes on a schedule with the maintenance scheduler. Decode warning lights with the fault code lookup. Before you buy a used truck, run the VIN decoder and the used truck inspection checklist.
More transmission comparisons and guides
Endurant HD vs XD frequently asked questions
What is the difference between the Eaton Endurant HD and XD?+
The HD is a 12-speed (or 11-speed direct drive) rated up to 1,850 lb-ft and 110,000 lb. The XD is an 18-speed rated at 1,650 or 1,850 lb-ft and 166,000 lb. The XD weighs 808 lb against 657 lb, and holds 25.4 pints of oil against 16.
Is the Endurant XD better than the Endurant HD?+
Neither is better in general. The XD has more gears and a higher weight limit, and it weighs 151 lb more than the HD. No independent study compares their reliability or fuel economy. Choose by the loads and the engine you run.
Which has the longer oil change interval, the Endurant HD or XD?+
The HD page lists up to 750,000 miles. The XD page lists 500,000 miles or 5 years on the highway. They are written on different bases, so use the table for your exact model and duty cycle.
Do the Endurant HD and XD use the same oil?+
Yes. Eaton Cummins recommends Eaton PS-386 for both. The HD holds 16 pints (7.57 L) and the XD holds 25.4 pints (12 L) in a coolerless unit without a PTO.
Does the Endurant HD or XD have the warranty?+
Eaton Cummins prints a warranty for the HD: 5 years or 750,000 miles on the transmission and 3 years or 350,000 miles on the clutch for linehaul. The XD pages we read do not print one, so ask for the written terms.
Sources for Endurant HD vs XD
Choosing between Endurant HD vs XD? Let a dispatcher help.
Grow Trucking finds loads, negotiates rates and does the paperwork for owner-operators and small fleets. Tell us what you haul and we will show you how a Endurant HD vs XD truck fits the lanes we book.
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Ratings, intervals and warranty terms for Endurant HD vs XD change by model year and configuration. Confirm exact figures for a specific truck against the makers' current documents and your written warranty before you buy or set a service schedule.
Free tools for a Endurant HD vs XD decision
Keep a Endurant HD vs XD truck serviced on time, decode its fault codes and check a truck before you buy.
- Preventive Maintenance SchedulerTrack oil changes for a Endurant HD vs XD truck by odometer and duty cycle.
- Diesel Fault Code Lookup (SPN/FMI)Decode the SPN/FMI fault codes either Endurant HD vs XD transmission reports.
- Breakdown Cost EstimatorEstimate what a breakdown costs in repairs and lost revenue on a Endurant HD vs XD truck.
- Used Truck Inspection ChecklistCheck the transmission and clutch on a Endurant HD vs XD truck before you buy it used.