Lambretta Technical Section
Oil Cooler Filter for Lambretta: Keeping Crankcase Temperatures Low

Effective Cooling Where It’s Needed
The Oil Cooler Filter is intended as a fundamental support to mitigate the excessive heat generated during engine operation. Its installation is extremely simple and direct: it is mounted directly on all Lambretta engines of the LI, LIS and DL models, replacing the original oil breather cap.
This clever integration allows the Oil Cooler Filter to function as a mini radiator. Using the airflow generated by the cylinder cooling system, the filter directs this ventilation to optimize heat dissipation directly from the crankcase. The result is a significant reduction in temperatures inside the crankcase, a tangible benefit that translates into a series of operational advantages.
Benefits of the Oil Cooler Filter for Your Lambretta
Keeping oil temperatures under control brings multiple benefits to your Lambretta engine:
- Less Thermal Stress: Cooler oil means less thermal stress on internal engine components, reducing the risk of premature wear and material degradation.
- Oil Life Extension: Engine oil retains its lubricating and protective properties longer when not subjected to excessive temperatures, extending drain intervals and ensuring constant protection.
- Increased Clutch Reliability: Heat is one of the clutch’s main enemies. By lowering the crankcase temperature, the Oil Cooler Filter helps extend the clutch’s life, improving its reliability and performance consistency.
- Improved Overall Performance: An engine that operates in optimal thermal conditions is a more efficient and performing engine. Reducing heat can positively influence the stability of the carburetion and the overall response of the engine
Installation and Compatibility
As mentioned, the Filtro Oil Cooler is compatible with Lambretta LI, LIS and DL engines. Its “plug-and-play” installation makes it an accessible upgrade for all enthusiasts, without the need for complex modifications or the intervention of specialists. It is a simple but effective investment for anyone who wants to take care of their Lambretta and improve its durability.
For More Information
Do you have any further questions about how to optimize the performance or maintenance of your Lambretta? For any additional information on the Oil Cooler Filter or other STFLambretta products, do not hesitate to contact us.
- Email: info@stflambretta.com
- Visit our website: stflambretta.com
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