Yamaha MW/S/D Tricity

Additional Notes

• The Yamaha Tricity 300 (MWD300) carries a radiator capacity of 1.1 liters, which is notably larger than the 125cc variants and reflects the greater thermal load produced by a higher-displacement engine requiring more coolant volume to maintain operating temperatures.
• The Tricity 125 MWS125-C specifies a radiator capacity of 0.46 liters paired with a 0.13-liter reservoir, while the earlier MW125 (2014-2021) lists a radiator range of 0.37-0.46 liters and a reservoir range of 0.25-0.33 liters. The range values on the MW125 are typical of service fill figures that vary depending on how completely the system was drained prior to refilling.
• The MWD300 reservoir capacity of 0.18 liters is smaller relative to its radiator volume than the ratio seen on the 125cc models, a proportion that reflects differences in cooling system design between the two engine families.
• All four configurations share a 36-month coolant change interval under normal use conditions. A time-based interval of this kind is standard for ethylene glycol coolants, which degrade chemically over time regardless of mileage, losing corrosion inhibitor effectiveness.
• The MW125 (2014-2021) reservoir capacity range of 0.25-0.33 liters is considerably wider than the fixed 0.13-liter figure on the MWS125-C, suggesting a revision in reservoir design or capacity between the two generations of the 125cc Tricity platform.
• The MWD300 specifications appear across two separate row entries covering 2020-2021 and a second entry starting from 2021, both listing identical capacities and change intervals, indicating no change in cooling system specifications between those entries.