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Tractor oil technical data · Repsol

Repsol Ceres STOU 15W-40

Repsol Ceres STOU 15W-40 is a STOU 15W-40 tractor and farm machinery oil (API CE, SF, GL-4). According to the manufacturer's data sheet it has a viscosity of 98 mm²/s at 40 °C, 13.2 mm²/s at 100 °C, a TBN of 10 mg KOH/g and a pour point of −30 °C.

Data sheet ↗ Data verified: 10 Nov 2026

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Parameters from the data sheet

ParameterValueClass median STOU 15W-40 i
Viscosity 40 °C98 mm²/s98 mm²/s
Viscosity 100 °C13.2 mm²/s13.5 mm²/s
Viscosity index124 The manufacturer gives only a limit, "at least 124", not a measured value.141
TBN10 mg KOH/g10.7 mg KOH/g
Pour point−30 °C−36 °C
Flash point215 °CThe manufacturer gives only a limit, "at least 215", not a measured value.228 °C
Density0.887 g/cm³0.88 g/cm³

All STOU 15W-40 oils → See the class table for a detailed comparison with other oils.

Specifications and approvals

Specification
API CE, SF, GL-4
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