Complete 90,000 mile service including engine oil, transmission fluid, differential fluid, coolant, air filter, cabin filter, spark plugs, and full system inspection for the 2015-2020 Ford F-150 with 5.0L Coyote V8.

Warnings

Tools required

Parts

• Engine oil filter × 1 — Motorcraft FL-820-S or equivalent
• Oil drain plug crush washer × 1 — Use OEM specification
• Engine air filter × 1 — Motorcraft FA-1927 or equivalent
• Cabin air filter × 1 — Motorcraft FP-67 or equivalent
• Spark plugs (Motorcraft SP-534) × 8 — Factory gap 0.051-0.057 inches
• Transmission drain plug seal/gasket × 1 — Use OEM specification
• Rear differential drain plug seal/gasket × 1 — Use OEM specification

Fluids

• Motorcraft 0W-20 Full Synthetic Engine Oil — 7.5 qt
• Motorcraft MERCON LV ATF — 5.5 qt
• Motorcraft 75W-140 Synthetic Gear Oil — 2 qt
• Motorcraft Orange Coolant — 2 qt
• Motorcraft DOT 4 LV Brake Fluid — 0.5 qt

Preparation

1. Park vehicle on level surface and engage parking brake
2. Ensure engine is completely cold (minimum 2 hours after last operation)
3. Gather all fluids, filters, and parts before beginning
4. Raise front of vehicle with floor jack and support on jack stands at frame rails
5. Raise rear of vehicle and support on jack stands at rear axle
6. Remove all four wheels for better access to undercarriage components

Procedure

1. 1

   Engine oil and filter change
   Locate oil drain plug on passenger side of oil pan. Place drain pan underneath and remove drain plug using 15mm socket. Allow oil to drain completely (approximately 10 minutes). Remove old crush washer from drain plug and install new crush washer. Reinstall drain plug and torque to specification. Move drain pan under oil filter (located on driver side of engine block). Remove old oil filter by turning counterclockwise. Clean filter mounting surface and apply thin film of new oil to new filter gasket. Install new filter hand-tight plus 3/4 turn. Fill engine with 7.5 quarts of 0W-20 synthetic oil through filler cap on passenger side valve cover.
2. 2

   Engine air filter replacement
   Open hood and locate air filter housing on driver side of engine bay. Release air box clips (typically 4-6 clips around perimeter). Lift air box cover and remove old air filter element. Inspect housing for debris and clean if necessary. Install new air filter ensuring proper seating in housing channels. Replace air box cover and secure all clips.
3. 3

   Cabin air filter replacement
   Open glove box and remove contents. Squeeze sides of glove box inward to release stops and lower completely. Locate cabin filter access door on left side of HVAC housing. Press release tabs and remove filter door. Slide old cabin filter out noting airflow direction arrows. Install new cabin filter with airflow arrows pointing toward rear of vehicle. Reinstall filter door until tabs click. Return glove box to normal position.
4. 4

   Spark plug replacement - driver side (cylinders 1, 2, 3, 4)
   Remove ignition coil cover screws if equipped. Disconnect electrical connector from each coil pack by pressing release tab. Remove coil pack mounting bolt from each cylinder using 7mm socket. Carefully pull each coil pack straight up with slight twisting motion. Use compressed air to clean debris from spark plug wells. Remove spark plugs using 16mm spark plug socket with 6" extension. Inspect old plugs for abnormal wear patterns. Verify new spark plug gap is 0.051-0.057 inches (factory specification). Apply small amount of anti-seize to spark plug threads (avoid electrode area). Hand-thread each new spark plug, then torque to 12 lb-ft (16 Nm) using torque wrench. Reinstall coil packs ensuring full seating in spark plug wells. Torque coil mounting bolts and reconnect electrical connectors.
5. 5

   Spark plug replacement - passenger side (cylinders 5, 6, 7, 8)
   Repeat coil pack removal process for passenger side cylinders. Access may be more restricted due to wiring harnesses and brake master cylinder proximity. Move harnesses aside carefully without disconnecting. Follow same spark plug removal, inspection, gapping, and installation procedure as driver side. Ensure each coil pack clicks fully into place when reinstalling. Torque all mounting bolts and verify all electrical connections are secure.
6. 6

   Transmission fluid service
   Locate transmission pan (center of vehicle, behind engine oil pan). Position drain pan underneath. Remove transmission drain plug using 8mm hex socket. Allow fluid to drain completely (approximately 5-6 quarts will drain). Inspect drained fluid for metal particles or burnt smell indicating potential issues. Remove old drain plug seal and install new seal. Reinstall drain plug and torque to 20 lb-ft. Locate transmission fill plug on driver side of transmission case. Remove fill plug using 8mm hex socket. Using fluid pump, add 5.5 quarts of MERCON LV ATF through fill hole until fluid begins to drip from opening. Reinstall fill plug and torque to 20 lb-ft.
7. 7

   Rear differential fluid service
   Locate rear differential (center of rear axle housing). Clean area around drain and fill plugs. Remove fill plug first using 3/8" hex socket to ensure it is not seized before draining. Position drain pan under differential. Remove drain plug and allow gear oil to drain completely. Inspect drained fluid for metal particles. Install new drain plug seal and reinstall drain plug. Torque drain plug to 25 lb-ft. Using fluid pump with long hose, add 2.0 quarts of 75W-140 synthetic gear oil through fill hole until fluid reaches bottom of fill hole threads. Reinstall fill plug and torque to 25 lb-ft.
8. 8

   Coolant exchange (partial)
   Verify engine is completely cold. Place large drain pan under radiator. Locate radiator petcock on driver side bottom of radiator or remove lower radiator hose at radiator. Open petcock or remove hose clamp and drain approximately 2 gallons of coolant. Close petcock or reinstall hose with new clamp if removed. Fill cooling system with Motorcraft Orange Coolant through degas bottle (located on passenger side of engine bay) until level reaches cold fill line. Do not overfill. This partial exchange renews approximately 25% of total coolant. Install degas bottle cap securely.
9. 9

   Brake fluid inspection and top-off
   Locate brake fluid reservoir on driver side firewall near brake booster. Clean cap and surrounding area before opening. Remove cap and inspect fluid level and condition. Fluid should be clear amber color, not dark brown. If fluid is dark, recommend full brake system flush. Top off reservoir to MAX line with fresh Motorcraft DOT 4 LV brake fluid if needed. Do not overfill. Reinstall cap ensuring proper seating to prevent moisture contamination.
10. 10

    Comprehensive inspection
    Inspect serpentine belt for cracks, glazing, or fraying. Check belt tensioner operation. Inspect all suspension components for wear including ball joints, tie rod ends, and control arm bushings. Check CV axles and driveshaft for damage or leaking boots. Inspect brake pads and rotors through wheel openings (minimum 3mm pad thickness required). Check all fluid levels including windshield washer. Inspect battery terminals for corrosion and test battery voltage (should be 12.4-12.8V engine off). Test all exterior lights. Check tire pressure and inspect tread depth (minimum 4/32" recommended). Look for any fluid leaks from engine, transmission, or differential.
11. 11

    Reinstall wheels and perform final checks
    Clean wheel mounting surfaces on hubs. Reinstall all four wheels ensuring proper seating. Hand-thread all lug nuts in star pattern. Lower vehicle until tires just touch ground but vehicle weight is still on jack stands. Torque all lug nuts to specification in star pattern. Fully lower vehicle and remove jack stands. Perform final torque check on all lug nuts in star pattern.

Reassembly

1. Verify all drain plugs are properly torqued and not leaking
2. Confirm all electrical connectors on ignition coils are fully seated
3. Ensure engine oil filler cap is tight and oil dipstick is fully seated
4. Verify degas bottle cap is properly installed to maintain cooling system pressure
5. Double-check that all tools and materials have been removed from engine bay and undercarriage

Verification

• Start engine and verify no warning lights remain illuminated on instrument cluster
• Allow engine to reach operating temperature while monitoring for leaks underneath vehicle
• Check engine oil level with dipstick after running (should be between MIN and MAX marks)
• Verify coolant level in degas bottle is at HOT FILL line with engine at operating temperature
• Test drive vehicle for 10-15 minutes, checking transmission shift quality and engine performance
• Re-check all fluid levels after test drive and inspect for any leaks
• Verify no unusual noises from engine or drivetrain during operation
• Reset oil life monitor through instrument cluster menu if equipped

More procedures for this vehicle