| Engine oil & filter | 1FZ-FE: API SH grade, 7.4 L (≈7.8 qt) with filter · 3F-E: 7.8 L (≈8.2 qt) with filter | Baseline now; then per your owner's-manual schedule | Timmy the Toolman's FZJ80 service uses Toyota filter 90915-YZZD3 and drain-plug washer 90430-12031, with the drain plug at 20 ft-lb.Oil filter, OEM (FJ40/45/55/60/62/FJ80 1969–96) · Cruiser Corps ↗Engine oil (1995 4.5L) · RockAuto ↗ |
| Air filter | Paper panel element | Baseline now; check at every oil change on dusty trails | Cheap insurance on a truck with unknown history — a dirty element is one of the 'owner neglect' signs Slee tells buyers to look for.Air filter, FJ40/45/55/60/62/FJ80 1969–98 · Cruiser Corps ↗Air filter (1995 4.5L) · RockAuto ↗ |
| Spark plugs, cap, rotor & wires | FZJ80: Denso/OEM plugs · FJ80: NGK · gap confirm in manual | Baseline now if no records | Both engines are distributor-fired, so do cap, rotor and plug wires at the same time.Denso / OEM spark plugs, FZJ80/LX450 1993–97 · Cruiser Corps ↗NGK spark plugs, FJ40/45/55/60/62/FJ80 1958–92 · Cruiser Corps ↗Spark plug wire set, FZJ80/LX450 9/1992–97 · Cruiser Corps ↗Distributor cap, FJ40–FJ80 1980–92 · Cruiser Corps ↗ |
| Coolant & thermostat | Ethylene-glycol Toyota coolant · FZJ80 13.4 L / FJ80 19.5 L (with front & rear heaters) | Baseline flush now | Timmy the Toolman refills with Toyota Red and lists thermostat 90916-03117 and gasket 16346-66020 for the FZJ80. Slee says to check the overflow bottle for deposits and look for a replaced radiator as overheating clues. Inspect the PHH while it's drained.Coolant / antifreeze (1995 4.5L) · RockAuto ↗Thermostat gasket, FZJ80/LX450 8/1992–97 · Cruiser Corps ↗Thermostat, OEM/Aisin (F/2F/3F, 1958–92) · Cruiser Corps ↗ |
| Automatic transmission fluid | ATF Dexron II spec (Dexron III / Valvoline MaxLife used as backward-compatible substitutes) · FJ80 (A440F): 6 L drain-and-refill, 15.4 L dry · FZJ80 (A343F): Toyota table on IH8MUD says 1.9 L drain-and-refill, Rough Trax says 6.0 L confirm in manual | Baseline now with 2–3 drain-and-fills or a cooler-line exchange | A pan drain only replaces a fraction of the fluid. FZJ80 drain-and-refill quantity confirm in manual; Timmy the Toolman buys three gallons for a full cooler-line flush and torques the drain plug (gasket 12157-10010) to 20 ft-lb. Avoid a pressure-machine flush on a high-mileage unit with unknown history.Automatic transmission fluid & filters (1995 4.5L) · RockAuto ↗ |
| Transfer case (center diff) | API GL-4/GL-5 SAE 75W-90 · 1.7 L (HF2AV) / 1.3 L (HF2A) | Baseline now | The fill plug is the 24 mm plug at about 8 o'clock looking from the rear (IH8MUD). Drain/fill plugs 27 ft-lb, gasket 90430-18008 (Timmy the Toolman).Transfer case fluid (1995 4.5L) · RockAuto ↗75W-90 gear oil (1995 4.5L) · RockAuto ↗ |
| Front differential | API GL-5 hypoid 80W-90 · 2.8 L listed — fill to the bottom of the fill hole | Baseline now; with ARB Air Lockers Slee's guide suggests about every 20,000 km | Owners on IH8MUD report a locking front diff drains close to 4 qt and takes about 3.75 qt, more than the book figure, so buy extra. Drain/fill plugs 36 ft-lb (Timmy the Toolman). Milky or very high oil can mean water or knuckle-seal trouble.80W-90 GL-5 gear oil (1995 4.5L) · RockAuto ↗Differential fill / drain plug (1995 4.5L) · RockAuto ↗ |
| Rear differential | API GL-5 hypoid 80W-90 · 3.25 L (FZJ80); FJ80 table lists 2.8 L · LSD oil if limited-slip | Baseline now | Factory-locker trucks: if the locker won't engage, Slee's guide points to an actuator rebuild rather than the diff itself. Semi-float 1991–92 axles leak gear oil onto the brakes when the outer seals go.80W-90 GL-5 gear oil (1995 4.5L) · RockAuto ↗ |
| Front knuckles / Birfields | Molybdenum-disulfide lithium-base grease, NLGI-2 | Check now; repack whenever the inner axle seals are replaced | Slee's check: pull the square knuckle fill plug and sample the grease. Runny grease means diff oil is getting past the inner axle seal, and caked grease outside the knuckle means the seals failed long ago — plan a full knuckle rebuild.80 Series knuckle rebuild kit FA9097 · CruiserTeq (Cruiser Outfitters) ↗Knuckle rebuild kit (Japanese), FJ80/FZJ80 1990–98 · Cruiser Corps ↗ |
| Power steering | ATF Dexron II · 0.75 L total (FJ80 table) | Baseline flush now | If it's weeping at the top, Unsealed 4X4 says the reservoir's internal seals are the usual culprit before hoses or the pump.Power steering fluid (1995 4.5L) · RockAuto ↗ |
| Brake fluid | DOT 3 (SAE J1703 / FMVSS 116) | Baseline flush now | Re-check the rear LSPV setting if the truck has been lifted (see the repair above).Brake fluid (1995 4.5L) · RockAuto ↗ |
| Driveshafts & U-joints | Lithium-base multipurpose grease, NLGI-2 | Grease now and at every oil change | Grease the U-joints and slip yokes and check them for play.Front driveshaft universal joint, FJ80/FZJ80/LX 1991–2021 · Cruiser Corps ↗Universal joint (1995 4.5L) · RockAuto ↗ |
| Fuel filter | Toyota canister filter | Replace now if there's no record of it | Different filters for 1991–92 FJ80 and 1993–97 FZJ80.Fuel filter, OEM, FZJ80/LX450 1993–97 · Cruiser Corps ↗Fuel filter, reproduction, FJ80 1991–92 · Cruiser Corps ↗ |
| Belts, hoses & the PHH | Accessory belts and coolant hoses · the 1FZ-FE uses a timing chain, not a belt | Inspect now; replace anything original | Replace the PHH and the bypass hose just above and forward of it while you're there. IH8MUD members report using Gates heater hose and good clamps instead of a $45 bypass kit.Heater hose (1995 4.5L) · RockAuto ↗Accessory belt (1995 4.5L) · RockAuto ↗Alternator / water pump belt, FJ62/FJ80 1987–92 · Cruiser Corps ↗ |