Caterpillar Soil compactors

AdBlue (DEF) capacity & service interval

Caterpillar soil compactors use AdBlue (DEF) with a capacity range of 16 to 32 liters. The data covers 5 configurations.

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

TypeSpecifications
815, Caterpillar C7.1 (2018- )
  • Use: Normal
  • Capacity 16 liter
816, Caterpillar C7.1 (2018- )
  • Use: Normal
  • Capacity 16 liter
825K, 233/SEE (2014- )
  • Use: Normal
  • Capacity 32 liter
826K, 232/SET (2014- )
  • Use: Normal
  • Capacity 32 liter
836K, LWZ/TWZ (2013- )
  • Use: Normal
  • Capacity 32 liter

Additional Notes

  • The Caterpillar 815 and 816 soil compactors equipped with the C7.1 engine carry an AdBlue (DEF) tank capacity of 16 liters, which is the smaller of the two capacity figures present across the listed configurations.
  • The 825K, 826K, and 836K models each carry a 32-liter AdBlue (DEF) tank capacity, double the figure recorded for the C7.1-powered machines.
  • All five configurations listed use a selective catalytic reduction (SCR) system, which is the aftertreatment technology that consumes AdBlue (DEF) to reduce nitrogen oxide emissions from diesel exhaust.
  • The 825K (serial prefix 233/SEE) and 826K (serial prefix 232/SET) share an identical 32-liter DEF capacity and both carry a starting model year of 2014.
  • The 836K (serial prefixes LWZ/TWZ) holds the same 32-liter DEF capacity as the 825K and 826K, though production for the 836K began in 2013, one year earlier than those two models.
  • All specifications are recorded under normal use conditions, meaning the capacities listed reflect standard operating fill levels rather than values tied to severe-duty service intervals.
  • The C7.1 engine introduction in the 815 and 816 dates from 2018, making those two the most recent engine platform entries among the configurations listed, and both share the same 16-liter DEF tank figure.

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