CG13
Member
Can you share the details on the gauge you’ve used for oil temps? What brand and how did you mount the gauge?Manufacturers generally recommend not pushing beyond 240–250°F for extended periods. The FL5 doesn't come equipped with a true oil temperature sensor the LogR app provides estimated values, but it's not a direct reading from the engine oil.
I've installed a proper engine oil temperature sensor on the return line from my oil cooler back to the engine. It shows a 70–80°F drop after the oil passes through my dual oil coolers, which makes sense. Obviously, airflow plays a big role if there’s a car in front blocking fresh air, temps will rise.
Based on that, while LogR isn't a true oil temp reading, I’d say it's pretty close. The large temperature delta is mostly due to my upgraded cooling setup. I've reached out to companies like Mobil and PWR, and they all echoed the same advice: start cooling down once you’re hitting 240–250°F.
That said, I’ve pushed the car past 290°F (stock) before without catastrophic issues, but I wouldn’t recommend doing that regularly if you care about engine longevity.
Now, maybe we should let the OP define what reliability means to him. If you're chasing ultimate reliability, get a Miata, S2000, RSX-S — or better yet, a Prius. Turbo cars just won’t match the long-term durability of a well-engineered naturally aspirated setup.
I am considering P3 gauge into my HEL oil cooler.
