Sisu Polar

Additional Notes

• The Sisu Polar semi-automatic transmission specifications list two distinct capacity values across all engine variants: 15 liters and 14.5 liters, indicating that service fill and total system fill figures are recorded separately for each configuration.
• The 15-liter figure appears twice per engine variant, while the 14.5-liter figure appears once, suggesting the 14.5-liter value represents a partial or drain-and-fill service quantity rather than a full overhaul capacity.
• All capacity values across the V6 and both V8 variants are recorded under normal use conditions, meaning the listed figures apply to standard operating environments rather than severe-duty cycles.
• The Polar V6 semi-automatic transmission shares identical capacity figures with both V8 variants, with 15 liters listed twice and 14.5 liters listed once per configuration.
• The two V8 variants, rated at 405 kW and 440 kW respectively, carry the same transmission fluid capacity specifications as each other, with no differentiation in fill volumes between the two power outputs.
• A 15-liter transmission fluid capacity is a substantial volume, consistent with heavy-duty commercial vehicle semi-automatic gearboxes where larger sump sizes are used to manage heat and maintain fluid longevity under load.
• The 0.5-liter difference between the 15-liter and 14.5-liter entries is a relatively small margin, which in transmission service contexts typically reflects the residual fluid retained in torque converters, cooler lines, or valve bodies after a standard drain procedure.