Motorcraft FL-820-S Premium Engine Oil Filter

The FL820S covers 450+ application lines across Ford, Lincoln, and Mercury vehicles from 1991–2026, including the F-150 (1994–2014), F-250/F-350/F-450/F-550 Super Duty (1999–2026), Expedition, Explorer, Mustang, E-Series vans, Crown Victoria, Ranger, and many others. Lincoln Town Car, Navigator, Continental, and Mercury Grand Marquis, Mountaineer, and Sable are also included. Always verify fitment against your specific year, make, model, and engine using Ford's application guide or a parts-finder before installation.

No. The 80% at 20-micron efficiency figure appears in the product description but cites no test method — not SAE J1858, not ISO 16889, not even a manufacturer-internal standard. Without a cited test method, this is marketing copy rather than verifiable evidence. No independent multi-pass filtration test data has been published for the FL820S.

Yes. Motorcraft states that the FL820S uses a silicone anti-drain-back valve. Silicone is more heat- and cold-resistant than standard nitrile rubber, which matters for cold-start performance and high-heat extended operation. The silicone ADBV is confirmed from the manufacturer's product description and the retail packaging label ('Silicone Valve'). No independent cut-open review has been located to verify ADBV construction beyond the manufacturer's disclosure.

Yes. The FL820S single-pack (ASIN B000AS3D3S) carries Amazon add-on item status, meaning it typically requires a qualifying order minimum or a Subscribe & Save enrollment to purchase on its own. The 4-pack variant (B0DQXMS256) may have different purchasing terms — check the current listing. Purchasing multiple filters at once (or bundling with oil) is the common workaround.

No specific mileage rating is stated on the FL820S product page. Ford's standard OEM service guidance for most listed applications is 5,000–7,500 miles depending on driving conditions, oil type, and vehicle model. The FL820S uses cellulose-synthetic blend media, which is not marketed or rated for extended drain intervals (10,000+ miles); change intervals beyond what Ford recommends for your specific vehicle are not endorsed for this filter.