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Mark Hendrikx - Automotive engineer at Mosselman

Expert's advice:

The S55 engine is no stranger to oil cooling problems, that’s why we recommend installing the MSL Oil Thermostat. The standard oil thermostat will reach around 120 degrees Celsius with a normal driving style. The MSL Oil Thermostat will open at a lower temperature than the standard oil thermostat (at 85 degrees Celsius) and will keep the temperature stable between 95 and 105 degrees Celsius, depending on the car model. Installing the MSL thermostat ensures a cooler oil temperature which will result in more stable performance, but above all this improves the reliability of the engine. It is recommended to install the thermostat, especially for cars that are tuned.

The Thermostat is plug-and-play and made out of a solid block of high-grade aluminum at our own facility. It is equipped with a real thermostat, not an always open solution. The oil will still reach the operating temperature at the same time as a stock thermostat.

Note: The Oil Thermostat Installation kit prevents the Oil Thermostat from leaking and is highly recommended when installing the MSL Oil Thermostat. The kit includes 2 x O-ring for the oil hose and 1x rubber oil filter housing gasket. We advise to add it to your order.

Mark Hendrikx - Automotive engineer at Mosselman

MSL OIL THERMOSTAT

MSL OIL THERMOSTAT

The next level of temperature control

  • 20°C Lower Than Stock
    Operating temperature 20°C lower than stock.
     
  • Real Thermostat
    Equipped with a real thermostat, not an always open solution. (for use in hot and cold climates)
     
  • Rock Solid Housing
    Made out of a solid block of high-grade aluminum.
     
  • Quick Installation
    Takes only 30 minutes to install.
Read more about the oil thermostat

Do you have a question?

Please take a look at our FAQ for the most commonly-asked questions, or feel free to contact us.

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Yes, it is equipped with a real thermostat, not an always open solution. The oil will still reach the operating temperature at the same time as a stock thermostat.

Yes, we highly recommend replacing the gasket and 0-rings to prevent the thermostat from leaking. We have an installation kit available, it includes 2 x O-ring for the oil hose and 1x rubber oil filter housing gasket. We advise to add it to your order.

The thermostat is plug-and-play, which means that you don't have to make modifications to install the thermostat. Just remove the old one and replace it with our MLS Oil Thermostat. The installation time will be approximately 30 minutes.

Technical details

Compatibility MSL Oil Thermostat S55 Type Engine
BMW M2 Competition F87 S55
BMW M3 F8x S55
BMW M3 Competition F80 S55
BMW M3 CS F80 S55
BMW M4 F8x S55
BMW M4 Competition F82 S55
BMW M4 CS F82 S55
BMW M4 GTS F82 S55