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The FL500S is a great filter. The leaking filter in question is the Ford Performance FL820S version. Ford recommends either filter in certain applications.

They leak, I’ve had 2 of them do this same thing on different vehicles. The FL500S is a great filter. Have used it on my Boss 302 Laguna for a decade without issues. They are easy to find everywhere as well.

So I got mine today. Looks like I have the wrong plug?

It’s actually pretty simple, the heat dictates the need for higher viscosity. Another interesting note about viscosity; variable cam phasers react differently based on the oil viscosity. “OEM type” calibrations take this into account. I’m not suggesting that this would cause engine damage, you...

Lots of info here. The “W” stands for winter in multi viscosity oil and not “weight”. The first number represents a cold flow score at -22F. Like golf, the lower the score, the better the performance in the cold. The second number is SAE viscosity at 212F. All motor oil gets thinner as it...

100% agree with you. I have been running the 5W50 ever since the truck was re-flashed with the Roush Calibration.

For sure. Funny thing about this, I reached out to confirm this requirement with Roush and they are going to check with engineering to confirm…

https://www.roushperformance.com/media/pdf/LimitedWarranty.pdf Page 30 at the bottom.

I called Roush to confirm what was in the instructions. Definitely 5W50 is required.

An intake will add more turbo spool sound for sure. Roush makes an intake that will not bound your warranty and will increase the spool sound you dig. You can also go with a Ford Performance Touring exhaust that will change the tone and add more spool sound. It like a stock “+” sound for lack of...

If you have the Roush Raptor performance calibration, you must switch to 5w50.

Man, You seem to be, really angry about nothing. The current 5.2 evolution of the Coyote. It’s actually the “best” of the current options available to what Ford Performance can offer to customers in this day. So much has changed since the “modular” motor has been offered. Lots of changes the 4.6...

To be honest, have you see. The Shelby CF stuff in person? It’s really poor looking. Sorry my first post is throwing shade…