1978Ford F-150

Service topics

5

Factory intervals

5

Fitment-scoped

5

Exact references

1

Before orderingIdentify your engine, options and build date.Part numbers and sizes can change within one model year. Shopping links appear only for catalog-backed references; still verify the listing against your vehicle before ordering.

• 01

  Engine oil

  Sourced interval available

  The federal matrix establishes the interval, not a current aftermarket part number; verify the installed engine before ordering.

  Applies to: 1978 · 351 cu in V8 · automatic · United States · US 1978 Ford F-150 pickup, 351 cu in V8 and automatic-transmission reference vehicle in the federal database.

  Published interval: 6,000 mi / 9,600 km

  Source: U.S. DOT/NHTSA — 1976–1979 Ford F-150 scheduled-maintenance mileage matrices · PDF page 231 (printed E.3-59), 1978 Ford F-150 mileage matrix — oil: 6,000 miles · checked 2026-08-24

• 02

  Engine oil filter

  Exact reference available

  The federal matrix establishes the interval, not a current aftermarket part number; verify the installed engine before ordering.

  Applies to: 1978 · 351 cu in V8 · automatic · United States · US 1978 Ford F-150 pickup, 351 cu in V8 and automatic-transmission reference vehicle in the federal database.

  Published interval: 6,000 mi / 9,600 km · The federal matrix also preserves a separately staged 12,000-mile filter entry.

  Source: U.S. DOT/NHTSA — 1976–1979 Ford F-150 scheduled-maintenance mileage matrices · PDF page 231 (printed E.3-59), 1978 Ford F-150 mileage matrix — oil filter: 6,000-mile service with a separately staged 12,000-mile entry · checked 2026-08-24

  Motorcraft catalog fitment for 1978 F-150

  Motorcraft FL-1A / Ford D9AZ-6731-A

  Applies to: 1978 · United States · Motorcraft's application table covers the F-150 nameplate and model-year range but does not print an engine-by-engine split. Confirm the installed filter, engine, and VIN before ordering.

  Source: Motorcraft — Original Equipment Performance oil-filter application data · PDF page 3 — FL1A / D9AZ-6731-A application table, Ford F-150 1975–1996 · checked 2026-08-30

  Verified ordering references

  • Service replacementMotorcraft FL-1A

    Qty. 1 · Spin-on engine-oil filter; Ford service number D9AZ-6731-A · catalog-listed

    Motorcraft's application table lists FL1A / D9AZ-6731-A for Ford F-150 model years 1975–1996. It does not separate the 1978 engine choices, so confirm the installed filter, engine, and VIN before ordering.

    Catalog: Motorcraft — Original Equipment Performance oil-filter application data · PDF page 3 — FL1A / D9AZ-6731-A application table, Ford F-150 1975–1996 · checked 2026-08-30

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• 03

  Engine coolant

  Sourced interval available

  The federal matrix establishes the interval, not a current aftermarket part number; verify the installed engine before ordering.

  Applies to: 1978 · 351 cu in V8 · automatic · United States · US 1978 Ford F-150 pickup, 351 cu in V8 and automatic-transmission reference vehicle in the federal database.

  Published interval: 42,000 mi / 67,200 km

  Source: U.S. DOT/NHTSA — 1976–1979 Ford F-150 scheduled-maintenance mileage matrices · PDF page 231 (printed E.3-59), 1978 Ford F-150 mileage matrix — coolant replacement: 42,000 miles · checked 2026-08-24

• 04

  Chassis lubrication

  Sourced interval available

  The maintenance matrix establishes the cadence; use the factory lubrication diagram for the exact fittings.

  Applies to: 1978 · 351 cu in V8 · automatic · United States · US 1978 Ford F-150 pickup, 351 cu in V8 and automatic-transmission reference vehicle in the federal database.

  Published interval: 6,000 mi / 9,600 km · Lubricate at the listed chassis-service interval.

  Source: U.S. DOT/NHTSA — 1976–1979 Ford F-150 scheduled-maintenance mileage matrices · PDF page 231 (printed E.3-59), 1978 Ford F-150 mileage matrix — chassis lubrication: 6,000 miles · checked 2026-08-24

• 05

  Emissions and safety inspection packages

  Sourced interval available

  The federal reports preserve Ford's grouped emissions, brake, steering, suspension, fuel-system, exhaust, and chassis checks. Package contents should be followed as a complete inspection rather than treated as replacement-part claims.

  Applies to: 1978 · 351 cu in V8 · automatic · United States · US 1978 Ford F-150 pickup, 351 cu in V8 and automatic-transmission reference vehicle in the federal database.

  Published interval: 6,000 mi / 9,600 km · Base recurring package interval; the matrix also stages 15,000- and 30,000-mile packages.

  Source: U.S. DOT/NHTSA — 1976–1979 Ford scheduled-maintenance package contents · 1978 Ford package task tables corresponding to the E.3-59 mileage matrix · checked 2026-08-24