| Engine oil & filter | SAE 5W-30 · ≈6.8 L with filter (Roughtrax); Amsoil lists 7.2 qt for 2005–07 trucks | Then per the owner's manual schedule confirm in manual | The IH8MUD 90k list gives the dealer filter as 90915-YZZD3 and says a larger JDM filter (90915-20004) is available and preferred by some owners.Toyota oil filter 90915-YZZD3 · LexusPartsNow (OEM) ↗Oil filter for 2UZ and others (OILYZZD3) · CruiserTeq ↗ |
| Engine air filter & cabin filter | Air filter 17801-50040 (IH8MUD 90k list) | Inspect at every oil change; replace when dirty | The cabin filter is easy to forget; IH8MUD's 100-series FAQ links an LX 470/Land Cruiser cabin-filter DIY.Toyota air filter 17801-50040 · LexusPartsNow (OEM) ↗Air filter, 1998–2007 UZJ100/LX470 2UZ (ENGAF50040) · CruiserTeq ↗Cabin air filter, UZJ100/LX470 (INTAF60010) · CruiserTeq ↗ |
| Spark plugs | Iridium 90080-91180 ×8 · factory torque 13 ft-lb (IH8MUD) | Iridiums are due at 120,000 mi, but IH8MUD members do them with the 90k timing belt | While the coils are out, check every plug for tightness: a tick or pop at cold start can be a plug walking out of the head.Toyota iridium spark plug 90080-91180 · LexusPartsNow (OEM) ↗ |
| Timing belt, tensioner, idlers & water pump | Belt 13568-09070 · tensioner 13540-50030 · idlers 13503-0F010 / 13505-0F010 · pump 16100-59275-83 (IH8MUD 90k list) | Every 90,000 mi; a truck with no receipt is due now | Do the thermostat (90916-03100), cam seals and crank seal while you're in there. IH8MUD members say the cam seals are more work on the 2006–07 VVT-i engine.Timing belt kit w/ tensioner, UZJ100/LX470 (BELTTK021) · CruiserTeq ↗Toyota timing belt tensioner 13540-50030 · LexusPartsNow (OEM) ↗Toyota timing idler 13503-0F010 · LexusPartsNow (OEM) ↗Toyota water pump 16100-59275-83 · LexusPartsNow (OEM) ↗ |
| Coolant, hoses & heater tees | ≈15 L (Roughtrax). 1998–2003: Toyota red Long Life Coolant · 2004–07: pink Super Long Life Coolant, premixed (Slee) | Red LLC every 30,000 mi or 2 years; pink SLLC at 100,000 mi, then every 50,000 mi (Slee) | Replace the plastic heater-hose tees (87248-60460) preventively; IH8MUD says they go brittle and can dump the coolant. Radiator hoses 16571-50150 / 16572-50150 and the bypass hose are worth doing with the timing belt.Heater tee, 100 Series/LX470 (EGWH60460) · CruiserTeq ↗Coolant bypass hose, 2UZ (RAD50090) · CruiserTeq ↗Thermostat gasket, 2UZ (RADOR50010) · CruiserTeq ↗ |
| Drive belt & tensioner | Serpentine belt 90916-02586 · belt tensioner 16620-0W101 (IH8MUD 90k list) | Replace with the timing belt, or sooner if cracked or chirping | The serpentine belt comes off for the timing belt anyway, so replace it and spin-check the idler and tensioner.Toyota serpentine belt 90916-02586 · LexusPartsNow (OEM) ↗Serpentine belt tensioner assembly, 1998–4/2005 100/LX470 (BELT0W101) · CruiserTeq ↗ |
| Automatic transmission fluid | A343F (1998–2002): Toyota T-IV, ≈2.0 L per drain-and-fill · A750F (2003–07): ≈3.0 L per drain-and-fill, ≈10.6 L dry; ATF WS on trucks without a dipstick (Roughtrax) | Then per the owner's manual schedule confirm in manual | Slee: from 2004 the dipstick was deleted (level is set at the overflow plug) and ATF WS is not interchangeable with T-IV or Dexron. A drain-and-fill only swaps the sump portion, so repeat it rather than doing one big flush on unknown fluid.Toyota ATF WS, 4 L · ToyotaPartsDeal (OEM) ↗ |
| Transfer case | GL-5 75W-90 · 1.4 qt (IH8MUD DIY); Roughtrax lists 1.5 L | Then per the owner's manual schedule confirm in manual | HF2A full-time case, no viscous coupler (Slee). Crack the 24 mm fill plug before the drain, torque the drain plug to 27 ft-lb and don't overtighten: the case can crack. Synthetic can quiet cold-morning whine.Toyota genuine gear oil Super 75W-90 (08885-02106; confirm GL-5 on the label) · ToyotaPartsDeal (OEM) ↗Toyota drain/fill plug gasket 90430-18008 · LexusPartsNow (OEM) ↗ |
| Front differential | GL-5 80W-90 hypoid · 1.8 qt (IH8MUD write-up); Roughtrax lists 1.6 L | Then per the owner's manual schedule confirm in manual | The IFS front diff has Allen-head plugs and too little clearance for squeeze bottles, so bring a pump. Two-pinion on 1998–99, four-pinion from 2000 (Slee).Toyota genuine gear oil Super 75W-90 (08885-02106; confirm GL-5 on the label) · ToyotaPartsDeal (OEM) ↗ |
| Rear differential | GL-5 80W-90 hypoid (LSD-rated per the write-up) · 3.5 qt (IH8MUD); Roughtrax lists 3.2 L, 3.3 L for LSD | Then per the owner's manual schedule confirm in manual | 9.5-inch ring gear. 1998–99 trucks could have the optional electric rear locker, so test that it engages (Slee).Toyota genuine gear oil Super 75W-90 (08885-02106; confirm GL-5 on the label) · ToyotaPartsDeal (OEM) ↗ |
| Power steering fluid | Dexron-III ATF (Amsoil lookup) · capacity confirm in manual | Refresh by suction-and-refill of the reservoir if dark | Rack-and-pinion IFS; Slee notes variable-gear steering arrived later in the run. |
| Brake fluid | DOT 3 (Amsoil lookup; Roughtrax allows DOT 3 or 4) | Then every 2–3 years confirm in manual | The 100 has a hydraulic brake booster with an electric pump: bleed with the key ON so the pump runs, and expect the ABS and brake lights to come on during the job. IH8MUD members bleed front left, front right, then the rears, and the factory manual describes extra steps for bleeding the actuator.Brake fluid catalog, 2002 Land Cruiser · RockAuto ↗ |
| AHC fluid (LX 470; AHC-equipped Land Cruisers) | Toyota AHC fluid 08886-01805 (2.5 L can) · ≈4.5 L system, forum estimate (Roughtrax) | An IH8MUD member's 2000 owner's manual lists replacement at 60,000 mi | Never top up with brake fluid; one IH8MUD owner's truck went soft after a dealer did. Bleed each corner with the engine off and the suspension in N.Toyota/Lexus AHC fluid 08886-01805 · LexusPartsNow (OEM) ↗ |
| Driveshaft grease points | Lithium-base NLGI No. 2 for the U-joints (Roughtrax) | At every oil change | IH8MUD's FAQ links a driveshaft lubing schematic; any hand grease gun fits the zerks.Red-i MOLY grease, 14 oz · CruiserTeq ↗ |