Content Source: 2020 Ranger Diesel Tractor Owner’s Manual (9930940 R02) > Maintenance Chapter

IMPORTANT

The Owner's Manual for this vehicle contains warnings, instructions and other information you must read and fully understand before safely riding or performing maintenance on this vehicle.Always follow the warnings and instructions in Owner's Manual.

Click the CONTENTS link above for the Table Of Contents, or download a full PDF of the Owner Manual in the Owner Support area of Polaris.com

Engine Oil

Always check and change the oil at the intervals outlined in the Periodic Maintenance Chart. Always use the recommended engine oil. Always change the oil filter whenever changing oil.
Pay special attention to the oil level. A rise in oil level during cold weather can indicate contaminants collecting in the oil sump or crankcase. Change oil immediately if the oil level begins to rise. Monitor the oil level, and if it continues to rise, discontinue use and determine the cause. Your dealer can assist.
WARNING
Vehicle operation with insufficient, deteriorated, or contaminated engine oil will cause accelerated wear and may result in engine seizure, accident and injury. Always perform the maintenance procedures as outlined in the Periodic Maintenance Chart.

Oil Recommendations

POLARIS recommends the use of full synthetic POLARIS Diesel Oil (SAE 5W-40) for this vehicle. Always use the correct viscosity grade based on the ambient temperature expected during operation. See the chart below.
NOTICE
Mixing brands or using a non-recommended oil may cause serious engine damage. Always use the recommended oil. Never substitute or mix oil brands.

Oil Viscosity / Ambient Air Temperature Chart

SAE 5W-40  
  SAE 15W-40

-31° C

(-25° F)

-15° C

(+5° F)

+27° C

(+80° F)

+40° C

(+104° F)

Oil Check

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To check the oil, do the following:
  1. Position vehicle on a level surface and place the transmission in PARK.
  2. Stop the engine and allow it to cool down before removing the dipstick.
  3. Raise the cargo box. Remove the dipstick and wipe it dry with a clean cloth.
  4. Reinstall the dipstick and push it into place.
    NOTE

    Make certain the dipstick is inserted all the way into the dipstick tube to keep the depth of the dipstick consistent.
  5. Remove the dipstick and check the oil level.
  6. Add the recommended oil as necessary to bring the oil level within the SAFE range on dipstick. Do not overfill.
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    NOTE

    A rising oil level between checks during cold weather operation can indicate contaminants such as gas or moisture collecting in the crankcase. If the oil level is over the upper mark, change the oil immediately.

  7. With the cargo box raised, add engine oil through the oil fill cap located on top of the valve cover, under the cargo box.
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  8. When finished, reinstall the dipstick. Lower the cargo box and secure in position.

Oil and Filter Change

Always change engine oil and filter at the intervals outlined in the Periodic Maintenance Chart. Always change the oil filter whenever changing the engine oil.
The engine oil fill cap is located on top of the valve cover. Access the oil fill cap by tilting the rear cargo box.
The crankcase drain plug is located on the bottom of the crankcase. Access the drain plug through the skid plate access hole located directly under the crankcase.
  1. Position vehicle on a level surface and place the transmission in PARK.
  2. Stop the engine and allow it to cool down.
  3. Clean the area around the crankcase drain plug.
    caution

    Use caution when performing this procedure. Do not allow hot engine oil to come into contact with skin, as serious burns may result.

  4. Place a drain pan under the engine crankcase and remove the drain plug . Allow the oil to drain completely.
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  5. Remove all cargo from the cargo box.
    caution

    Always remove all cargo from the cargo box before lifting the box to access the engine.
  6. Pull up on the cargo box release lever to tilt the box.
  7. Remove the mud guard by unscrewing its four bolts .
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  8. Using an oil filter wrench, turn the oil filter counter-clockwise to remove it.
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  9. Using a clean dry cloth, clean the filter sealing surface on the engine crankcase.
  10. Lubricate the O-ring on the new oil filter with a film of fresh engine oil. Check to make sure the O-ring is in good condition.
  11. Install the new filter and turn by hand until the filter O-ring contacts the sealing surface, then turn an additional 3/4 turn
  12. Replace the sealing washer on drain plug.
    NOTICE

    The sealing surface on the drain plug should be clean and free of burrs, nicks or scratches.
  13. Reinstall the engine crankcase drain plug. Torque the drain plug to 16 Nm (12 ft-lbs).
  14. Remove oil fill cap and add 3.7 L (3.9 quarts) of recommended oil. Reinstall the fill cap.
  15. Verify the transmission is still in PARK.
  16. Start the engine and allow it to idle for 30 seconds.
  17. Stop the engine and inspect for oil leaks. Wait at least 15 seconds before removing the dipstick.
  18. Remove the dipstick and wipe it dry with a clean cloth.
  19. Reinstall the dipstick and push it into place.
    NOTICE

    Make certain the dipstick is inserted all the way into the dipstick tube to keep the depth of the dipstick consistent.
  20. Remove the dipstick and check the oil level.
  21. Add the recommended oil as necessary to bring the oil level within the SAFE range on dipstick. Do not overfill.
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    NOTICE
    Add oil slowly, to make sure oil does not get into the breather or intake.
  22. When finished, reinstall the oil fill cap and oil dipstick.
  23. Dispose of used oil and filter properly.

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