Wolf Moto 4T 10W40-1L

Oil consumption due to evaporation

Let’s first look at why oil ‘gets consumed’. At high temperatures, like inside running engines, oil slowly evaporates over time. Evaporation is the first cause of oil consumption.

We continuously measure this oil consumption in our laboratory as part of our ongoing quality tests. These tests show that the oil consumption of a 10w40 Mid SAPS amply meets the requirements. Moreover, we tested the WOLF OFFICIALTECH 10W40 ULTRA MS (a Mid SAPS), and the oil consumption from evaporation was actually lower when compared to the WOLF VITALTECH 15W40.

Oil consumption due to lower viscosity

But there is another cause for oil consumption: viscosity. Car manufacturers must meet the latest ‘Euro’ emission standards. To that end, they create engines with less friction, meaning less fuel consumption and lower emissions.

Lubricant manufacturers, in their turn, have to produce lubricants with a lower viscosity (meaning thinner) for these engines. These oils enter the combustion chamber much quicker. As a consequence, more oil is burnt. Oil consumption due to lower viscosity is probably higher when using 10W40 Mid SAPS lubricants.