The John Deere 855 compact utility tractor is a reliable machine widely used for farming, landscaping, and heavy-duty property maintenance.
To keep this diesel-powered tractor running efficiently, proper engine oil selection and regular maintenance are essential.
Using the correct oil type helps reduce engine wear, maintain hydraulic performance, and extend overall tractor life even under heavy workloads.
John Deere 855 Engine Oil Type
The recommended oil type for John Deere 855 tractor is SAE 15W-40 diesel engine oil meeting API CF or higher specifications.
This oil provides strong protection against wear, soot buildup, and high-temperature operation.
In colder climates, SAE 10W-30 can also be used, but 15W-40 remains the most commonly recommended oil for year-round tractor operation.
Best Choice: 15W-40 high-quality diesel engine oil (John Deere Plus-50, Shell Rotella, or Mobil Delvac) ensures maximum engine protection and durability.
John Deere 855 Oil Capacity
The engine oil capacity for the John Deere 855 varies slightly depending on service conditions and filter change.
Hydraulic & Transmission Oil Type
The John Deere 855 uses Hy-Gard low-viscosity hydraulic fluid for its hydrostatic transmission and hydraulic system.
This ensures smooth operation of steering, lift arms, and drivetrain components.
- Transmission Oil: John Deere Hy-Gard
- Hydraulic System: Hy-Gard Low Viscosity
- Front Axle Fluid: JD Recommended Gear Oil
Oil Change Interval for John Deere 855
Regular oil changes are important to maintain diesel engine performance and prevent long-term wear.
John Deere 855 Oil Change Cost
- DIY Oil Change: $40 – $70
- Local Workshop: $70 – $120
- Dealer Service: $120 – $200
Best Engine Oil Brands for John Deere 855
Recommended Oils
- John Deere Plus-50 15W-40
- Shell Rotella T6 15W-40
- Mobil Delvac 1300 15W-40
- Castrol Vecton 15W-40
- Valvoline Premium Blue 15W-40
Why Proper Oil Matters
- Reduces diesel engine wear
- Improves fuel efficiency
- Prevents sludge and carbon buildup
- Protects hydraulic system performance
- Extends engine lifespan
How to Change Oil in John Deere 855
Common Problems Related to Oil
- Oil leakage from seals and gaskets
- Engine overheating under heavy load
- Hydraulic response delay due to old fluid
- Excessive engine wear from poor maintenance
Frequently Asked Questions (FAQ)
What oil does John Deere 855 use?
It uses SAE 15W-40 diesel engine oil meeting API CF or higher standards.
How much oil does it take?
Approximately 3.6–3.8 liters with oil filter change.
How often should oil be changed?
Every 200 hours or once per year.
What hydraulic oil is used?
John Deere Hy-Gard low-viscosity hydraulic fluid is recommended.
Final Thoughts
The John Deere 855 is a durable compact tractor that performs best with proper oil selection and regular maintenance.
Using high-quality 15W-40 diesel oil and following service intervals ensures long engine life and reliable operation.