| Engine oil & filter | 2F: 7.8 L (≈8.2 qt) with filter · F: 7 L · factory spec API SC/SD (use a modern oil suited to a flat-tappet engine) | Baseline now; then per your owner's-manual schedule | One IH8MUD owner warns the owner's manual figure led him to overfill; another always uses 8 qt in a 2F with a filter change. Fill to the dipstick, not the book. New drain-plug washer every time.Oil filter, OEM (FJ40/45/55/60/62/FJ80 1969–96) · Cruiser Corps ↗Oil drain plug gasket, 25 mm fiber, OEM (1958–82) · Cruiser Corps ↗ |
| Air filter | Paper element in the factory air cleaner | Baseline now | Replace it before you judge how the carburetor runs.Air filter, FJ40/45/55/60/62/FJ80 1969–98 · Cruiser Corps ↗ |
| Ignition tune-up | Plugs, points (where fitted), cap & rotor · gap and dwell confirm in manual | Baseline now | Check fuel and ignition basics before blaming the carburetor.NGK spark plugs, FJ40/45/55/60/62/FJ80 1958–92 · Cruiser Corps ↗Distributor points, FJ40/45/55 1973–86 · Cruiser Corps ↗Distributor cap, FJ40/45/55 1974–77 · Cruiser Corps ↗Distributor rotor, FJ40/45/55 1974–80 · Cruiser Corps ↗ |
| Valve lash | Adjustable rockers · clearances confirm in manual | Check now; then periodically | The F and 2F have adjustable rockers that need periodic checks; tight valves are the ones that burn. Valve layout front to back is E-I-I-E-E-I-I-E-E-I-I-E.Valve cover gasket, FJ40/45/55 1958–74 · Cruiser Corps ↗Valve cover gasket, FJ40/45/55 1975–80 · Cruiser Corps ↗ |
| Coolant & thermostat | Ethylene-glycol coolant · 2F: 16.5 L (the original F table lists 15.2 L) | Baseline flush now | The early F-engine table even lists plain water; use proper ethylene-glycol coolant now, flush until it runs clear, fit a fresh thermostat and check the bypass hose.Thermostat, OEM/Aisin (F/2F/3F, 1958–92) · Cruiser Corps ↗Upper thermostat gasket, OEM (1958–92) · Cruiser Corps ↗Water bypass hose, OEM (FJ40/45/55/60 1958–87) · Cruiser Corps ↗ |
| Manual transmission | API GL-4, SAE 90 · J30 3-speed 1.7 L · H41 4-speed 3.1 L | Baseline now | A swapped-in H55F five-speed takes 4.9 L (60/70-series table) and needs its fifth-gear oiler.Gear oil (listed under 1985 Land Cruiser 4.2L) · RockAuto ↗ |
| Transfer case | API GL-4, SAE 90 · 1.7 L (2.1 L with PTO) | Baseline now | A PTO winch also has its own gearbox: front winch GL-4 SAE 90, 600 cc.Gear oil (listed under 1985 Land Cruiser 4.2L) · RockAuto ↗ |
| Front & rear differentials | API GL-5 hypoid 80W-90 · 2.5 L each · LSD oil for limited-slip | Baseline now | Gear oil mixed into the knuckle grease points to failed inner axle seals.80W-90 GL-5 gear oil (listed under 1985 Land Cruiser 4.2L) · RockAuto ↗Differential gasket, FJ40/45/55/60/62 1958–90 · Cruiser Corps ↗ |
| Front knuckles & Birfields | Molybdenum-disulfide lithium-base grease, NLGI-2 | Check now; repack with any seal job | Weeping at the wiper seals or a mix of grease and 90-weight inside means a knuckle rebuild.Knuckle rebuild kit (Japanese), FJ40/45/55/60/62 1975–90 · Cruiser Corps ↗Knuckle rebuild kit (Japanese), FJ40/45/55 1958–75 · Cruiser Corps ↗ |
| Steering box & power steering | Manual box: API GL-4 SAE 90, 600 cc · power steering (1979–84): ATF Dexron, 0.8 L total | Check level now | Top up the manual box through its fill plug; most play is in the box, center arm and tie-rod ends.Power steering fluid (1978 4.2L) · RockAuto ↗ |
| Brake fluid | DOT 3 (SAE J1703) | Baseline flush now | Bleed every corner and look for weeping wheel cylinders on drum-brake axles.Brake fluid (1978 4.2L) · RockAuto ↗ |
| Chassis grease, U-joints & wheel bearings | Chassis: moly lithium NLGI-2 · driveshafts & wheel bearings: lithium multipurpose NLGI-2 | Grease now and at every oil change; repack wheel bearings now | Grease the spring pins/shackles (greaseable pins if fitted), driveshaft U-joints and slip yokes.Driveshaft universal joints, FJ40/45/55/60/62 1974–90 · Cruiser Corps ↗Driveshaft universal joints, FJ40/45 1958–73 · Cruiser Corps ↗Front wheel bearing kit, 1958–9/1975 · Cruiser Corps ↗Front wheel bearing seal, 1975–97 · Cruiser Corps ↗ |
| Fuel filter | Inline filter | Replace now | Do it before or with any carburetor rebuild.Fuel filter, FJ40/45/55 1979–80 · Cruiser Corps ↗Fuel filter, FJ40/45/55/60 1980–87 · Cruiser Corps ↗Fuel filter, OEM, FJ40/45/55 1972–78 · Cruiser Corps ↗ |
| Belts & hoses | V-belts and radiator hoses · gear-driven camshaft, so no timing belt | Inspect now; replace anything cracked or original | The F-series engine drives its camshaft by gears, so there's no timing belt or chain to schedule.Alternator/fan V-belt, OEM, FJ40/45/55 1975–84 · Cruiser Corps ↗Alternator/fan V-belt, OEM, FJ40/45/55 1968–74 · Cruiser Corps ↗Radiator inlet / upper hose, FJ40/45 1968–78 · Cruiser Corps ↗ |