Leyland Leyland Synchro

Coolant capacity & service interval

Leyland Synchro coolant capacity ranges from 7,95 to 13,6 liters. Service intervals include checks every 50 hours and changes every 24 months. The data covers 4 configurations.

The configuration chart below lists fill volumes and service intervals for each engine and trim variant.

TypeSpecifications
502 (1980-1982)
  • Use: Normal
  • Capacity 7,95 liter
  • Check 50 hours
  • Change 24 months
602, 604 (1980-1982)
  • Use: Normal
  • Capacity 13,6 liter
  • Check 50 hours
  • Change 24 months
702, 704 (1980-1982)
  • Use: Normal
  • Capacity 13,6 liter
  • Check 50 hours
  • Change 24 months
802, 804 (1980-1982)
  • Use: Normal
  • Capacity 13,6 liter
  • Check 50 hours
  • Change 24 months

Additional Notes

  • The Leyland Synchro 502 (1980-1982) carries a cooling system capacity of 7.95 liters, which is notably smaller than the capacity found in the higher-numbered variants within the same model range.
  • The 602, 604, 702, 704, 802, and 804 variants all share an identical cooling system capacity of 13.6 liters, indicating a common engine cooling architecture across those configurations despite their differing model designations.
  • A 50-hour check interval applies to all four cooling system configurations under normal use conditions, a figure expressed in operating hours rather than calendar time, which is standard practice for agricultural and industrial machinery where annual mileage is not a meaningful measure.
  • A 24-month change interval is specified for all configurations under normal use conditions, meaning coolant replacement is tied to elapsed time rather than operating hours alone.
  • The combination of a 50-hour check and a 24-month change interval across all variants reflects a dual-trigger service approach, where the fluid level is monitored frequently during operation while full replacement follows a longer calendar-based cycle.

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