I use MotorCraft FL1-HP because of the higher relief pressure, 22 PSI and the FL-1A is 11 - 14 psi
https://www.summitracing.com/parts/mof-fl1hp/overview/
Brand:Motorcraft
Manufacturer's Part Number:E7TZ6731A
Part Type:
Oil Filters
Product Line:Motorcraft
Oil Filters
Summit Racing Part Number:MOF-FL1HP
UPC: 031508214927
Oil Filter Style: Canister
Height (in): 5.750 in.
Outside Diameter (in): 3.719 in.
Filter Bypass Relief Valve: Yes
Relief Valve Open (psi): 22 psi
Anti-Drainback Valve: Yes
Thread Size: 3/4-16 in.
Gasket Outside Diameter (in): 2.813 in.
Gasket Inside Diameter (in): 2.422 in.
Gasket Thickness (in): 0.328 in.
Quantity: Sold individually.
In-Store Pickup:Choose In-store pick-up (OH, GA, NV) on our web site.
Motorcraft oil filters are specifically designed for Ford, Lincoln, and Mercury vehicles. Each Motorcraft oil filter, including the popular Motorcraft FL-1A, uses as many as 12 high-quality components.
Construction features include:
* Steel cases: "Ironed" for a precise fit, fluted to ease removal, and painted for rust resistance
* Pressure relief valve: When it's cold outside, or if the filters become clogged, oil flow through the filters can be reduced. If this happens, the relief valve opens to provide a continuous oil supply. Its design also minimizes the chance of contaminated oil recirculating back
* Anti-drainback valve: This feature keeps oil in the filters to prevent "dry starts" after your engine has been turned off. It's made with specially formulated materials that resist the aging effects that an engine's heat can cause
* Efficient filter media: Re-engineered media increases Motorcraft filters' dirt-collecting capabilities, allowing them to capture more engine-harming particles than ever before