🔧 GX460 - Engine Oil & Oil Filter Replacement

On your GX460, an oil change means draining the old engine oil, replacing the oil filter (cartridge-style inside a housing), and refilling with the correct oil. This keeps the V8 properly lubricated and prevents premature wear.

Difficulty Level: Beginner | Estimated Time: 1.0-2.0 hours

Assumption: Stock oil filter housing and factory-style skid plates.

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⚠️ Safety & Precautions

• ⚠️ Work on level ground and support the SUV with jack stands before going underneath.
• ⚠️ Engine oil can be hot—let the engine cool 20–30 minutes to avoid burns.
• ⚠️ Chock the rear wheels and keep the shifter in Park.
• ⚠️ Do not crawl under a vehicle supported only by a jack.
• ⚠️ Battery disconnect is not required for this service.

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🔧 Required Tools

You'll need the following tools for this repair:

• Floor jack (rated 3-ton minimum)
• Jack stands (rated 3-ton minimum)
• Wheel chocks
• Safety glasses
• Nitrile gloves
• Drain pan (10-quart minimum)
• Funnel
• Shop rags
• Ratchet (3/8" drive)
• Socket set (10mm, 12mm, 14mm)
• Torque wrench (10–80 ft-lbs range)
• 64mm 14-flute oil filter cap wrench (specialty)
• 3/8" drive extension (3"-6")
• Trim clip tool

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Engine oil (0W-20 full synthetic) - Qty: 8.5 quarts
• Oil filter cartridge kit (with O-rings) - Qty: 1
• Oil drain plug crush washer - Qty: 1

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📋 Before You Begin

• Park on a level surface, set the parking brake, and place wheel chocks behind the rear tires.
• Warm the engine 2–3 minutes, then shut it off (warm oil drains faster, but don’t work with scalding oil).
• Raise the front with a floor jack and support with jack stands at proper lift points.
• Open the hood and remove the oil filler cap (helps the crankcase vent and drain smoothly).

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Remove the skid plate access (if equipped)

• Put on safety glasses and nitrile gloves.
• Position a drain pan (10-quart minimum) under the front of the engine.
• Use a 12mm socket and ratchet (3/8" drive) to remove the small skid plate access panel or the front skid plate fasteners (varies by plate style).
• Use a trim clip tool if plastic clips are present.
• Tip: Keep bolts in a small tray.

Step 2: Drain the engine oil

• Locate the oil pan drain plug and slide the drain pan (10-quart minimum) directly underneath.
• Use a 14mm socket with a ratchet (3/8" drive) to loosen the drain plug, then finish removing it by hand.
• Let the oil drain until it slows to a drip (typically 5–10 minutes).
• Clean the drain plug with shop rags and replace the oil drain plug crush washer.

Step 3: Reinstall and torque the drain plug

• Thread the drain plug in by hand first (prevents cross-threading).
• Use a torque wrench (10–80 ft-lbs range) with a 14mm socket to tighten the drain plug: Torque to 40 Nm (30 ft-lbs).

Step 4: Remove the oil filter housing (cartridge filter)

• Locate the oil filter housing (a round cap assembly).
• Position the drain pan (10-quart minimum) under the filter area.
• Use a 64mm 14-flute oil filter cap wrench (specialty) with a ratchet (3/8" drive) and 3/8" drive extension (3"-6") to loosen the filter housing.
• Slowly unscrew the housing and lower it carefully—oil will spill as it comes down.
• Tip: Keep the housing upright to reduce mess.

Step 5: Replace the cartridge filter and O-rings

• Pull the old filter cartridge out of the housing by hand.
• Remove the old O-ring(s) from the housing using a trim clip tool (use it gently like a pick). An O-ring is a rubber sealing ring that prevents leaks.
• Wipe the housing clean with shop rags.
• Install the new O-ring(s) from the oil filter cartridge kit (with O-rings).
• Lightly coat the new O-ring(s) with fresh engine oil (0W-20 full synthetic) using a gloved finger.
• Install the new cartridge filter into the housing (push until fully seated).

Step 6: Reinstall and torque the oil filter housing

• Thread the filter housing onto the engine by hand until the O-ring contacts and it seats smoothly.
• Use the 64mm 14-flute oil filter cap wrench (specialty) with a torque wrench (10–80 ft-lbs range) to tighten: Torque to 25 Nm (18 ft-lbs).

Step 7: Reinstall the skid plate access

• Reinstall the access panel/skid plate using a 12mm socket (and 10mm socket if small bolts are used) with a ratchet (3/8" drive).
• Snug fasteners evenly; do not overtighten small bolts.

Step 8: Refill with new engine oil

• Lower the SUV off the jack stands using the floor jack (rated 3-ton minimum).
• Insert a funnel into the oil fill opening.
• Pour in engine oil (0W-20 full synthetic) gradually. Start with about 8.0 quarts, then adjust after checking level.
• Reinstall the oil filler cap.

Step 9: Start, leak-check, and set the oil level

• Start the engine and let it idle 30–60 seconds.
• Shut the engine off and wait 5 minutes for oil to drain back to the pan.
• Check underneath for leaks at the drain plug and filter housing.
• Check the dipstick, then top off as needed to reach the full mark (add in small amounts).
• Wipe any spilled oil with shop rags.

Step 10: Reset the maintenance reminder (two common methods)

• Method A (Trip/ODO button style):
  • Turn ignition to ON (engine off).
  • Use the ODO/TRIP button to display Trip A.
  • Turn ignition OFF.
  • Press and hold the ODO/TRIP button while turning ignition to ON.
  • Keep holding until the maintenance reset completes.
• Method B (Multi-Information Display settings):
  • With ignition ON, use steering wheel controls to open Settings.
  • Select Vehicle Settings or Maintenance System, then choose Oil Maintenance.
  • Select Reset and confirm.

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✅ After Repair

• Re-check for leaks after a short 5–10 minute drive.
• Verify the oil level on the dipstick one more time on level ground.
• Dispose of used oil and the old filter properly at a recycling center/parts store.
• If you notice drips, re-check that the crush washer is new and the filter housing O-ring is seated correctly.

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💰 DIY vs Shop Cost

Shop Cost: $140-$220 (parts + labor)

DIY Cost: $55-$95 (parts only)

You Save: $85-$125 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 1.0-1.5 hours.

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🎯 Ready to get started?

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