PAZ 3237
Coolant capacity & service interval
PAZ 3237 coolant capacity ranges from 32 to 60 liters. Service intervals include checking every 12 months and changing every 24 months. The data covers 2 configurations.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
| Type | Specifications |
|---|---|
| 3237-05 (2013- ) |
|
| 3237-01 / 3237-03 / 3237-09 (2012- ) |
|
Additional Notes
- The PAZ 3237-01, 3237-03, and 3237-09 variants share a cooling system capacity of 32 liters, reflecting a moderately sized liquid-cooled engine setup typical of mid-range bus powertrains.
- The 3237-05 variant carries a notably larger cooling system capacity of 60 liters, nearly double that of the other three variants, which points to a significantly more powerful or thermally demanding engine configuration in that trim.
- A 60-liter cooling system capacity is consistent with heavy-duty or high-displacement diesel engines, where greater coolant volume is required to manage sustained heat loads across extended operating cycles.
- For the 3237-05 under normal use conditions, a coolant inspection interval of 12 months is specified, meaning the system is assessed for concentration, contamination, and level on an annual basis.
- The 3237-05 also carries a coolant change interval of 24 months under normal use, placing the full fluid replacement on a two-year cycle relative to the annual inspection point.
- No check or change intervals are listed for the 3237-01, 3237-03, or 3237-09 variants, whereas the 3237-05 specifications include both, making the 3237-05 the only configuration with a defined service schedule in the available data.
- The 3237-05 entered the specification set from 2013, one year after the 3237-01, 3237-03, and 3237-09 variants, which carry a starting year of 2012.