Part Two: Let's talk oil cooler

Do you think you need a Aftermarket oil cooler ? 

1. Factory Oil Coolers: Most Subaru models since 1995, particularly turbocharged variants like the WRX, come equipped with factory oil coolers, which are essentially heat exchangers. These components stabilize oil temperatures under various driving conditions.

2. Aftermarket Solutions: For those who have turbocharged Subarus lacking factory oil coolers or who demand higher performance, installing an external oil cooler could be beneficial. This allows for more efficient oil cooling independent of the vehicle's cooling system, especially under higher power outputs and track conditions.

rcm oil cooler kit below

3. Thermostatic Control: Some of the oil cooler sandwich plates for installing an external oil cooler, have a thermostat built in and it's  essential for regulating oil temperatures, particularly in colder weather. 

thermostatic sandwich plate shown below 

4. Line Routing and Positioning: This is the tricky bit Proper routing of the oil lines and strategic placement of the cooler for optimal airflow are vital. Keeping the lines away from heat sources is crucial to maintain oil integrity. 

example of oil lines shown below

5. Monitoring: Installing an oil pressure and temperature gauge is strongly advised, especially for track use. Monitoring these metrics ensures that the cooler functions correctly and helps in detecting any potential issues early.

We will talk about the use of gauges in the future. 

To summarize, maintaining consistent oil temperatures is vital for the reliability and performance of your Subaru, particularly in high-demand situations. Whether opting for a factory setup or an aftermarket solution, ensuring proper installation and monitoring will help maximize your engine's longevity. 

Here is an oil cooler example we have fitted . 

If you're considering a kit or installation, feel free to reach out for tailored options at Fflat4