🔧 Frontier - Automatic Transmission Fluid Change

This service replaces old automatic transmission fluid (ATF) to help your Frontier shift smoothly and reduce wear. You can do a simple drain-and-fill, or a deeper service by dropping the pan and replacing the internal filter.

Difficulty Level: Intermediate | Estimated Time: 1.5-3.5 hours

---

⚠️ Safety & Precautions

• 🧯 Work on a level surface and support the truck with jack stands (never only a jack).
• 🔥 Transmission fluid can be hot—let it cool enough to avoid burns.
• 🧤 Keep ATF off skin and away from eyes; wear gloves and safety glasses.
• 🛑 Keep the engine OFF while draining; only run it during the final level check.

---

🔧 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 (long neck)
• Shop rags
• 3/8" drive ratchet
• 19mm socket
• 10mm socket
• Torque wrench (5–60 Nm range)
• Trim clip tool (optional)
• Brake cleaner spray
• Measuring container (at least 6 quarts)

---

🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Automatic transmission fluid (Nissan Matic S equivalent) - Qty: 5-6 quarts
• Transmission drain plug crush washer - Qty: 1
• Transmission pan gasket - Qty: 1
• Automatic transmission filter - Qty: 1

---

📋 Before You Begin

• 🅿️ Park on level ground, set the parking brake, and chock the rear wheels.
• 📏 Check your baseline fluid level on the dipstick before you start (so you know where “normal” is).
• 🧼 Plan a clean refill: wipe around the dipstick tube so dirt can’t fall in.
• 🧊 If the truck was just driven, let the transmission cool so the ATF isn’t scalding.

---

🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Warm the fluid and confirm the dipstick works

• Start the engine and let it idle 5–10 minutes, then shut it OFF.
• Pull the transmission dipstick, wipe it with a rag, reinsert fully, then pull again and note the level.
• Warm fluid drains faster and more completely.

Step 2: Raise and secure the truck

• Use a floor jack to lift the front, then set it onto jack stands.
• Keep the truck as level as possible so the final fluid level reading is accurate.

Step 3: Remove any underbody cover/skid (if equipped)

• Use a 10mm socket and 3/8" drive ratchet to remove the bolts.
• If you have plastic clips, remove them with a trim clip tool.

Step 4: Drain the transmission (drain-and-fill starts here)

• Place the drain pan under the transmission pan drain plug.
• Remove the drain plug using a 19mm socket and 3/8" drive ratchet.
• Let it drain fully (usually 10–20 minutes).
• Measure what came out using your measuring container (you’ll refill the same amount).

Step 5A: Reinstall the drain plug (for drain-and-fill)

• Install a new drain plug crush washer (a crush washer is a soft sealing ring that prevents leaks when tightened).
• Thread the plug in by hand first, then tighten with a torque wrench and 19mm socket.
• Torque to 34 Nm (25 ft-lbs)

Step 5B: OPTIONAL - Drop the pan and replace the filter (deeper service)

• With the drain complete, use a 10mm socket and 3/8" drive ratchet to remove the pan bolts.
• Keep a hand on the pan as you loosen the last bolts; more ATF will spill into the drain pan.
• Remove and replace the transmission filter using a 10mm socket and 3/8" drive ratchet.
• Clean the pan and magnets using brake cleaner spray and shop rags.
• Install the new pan gasket, then reinstall the pan bolts finger-tight first.
• Tighten pan bolts evenly in a crisscross pattern with a torque wrench and 10mm socket.
• Torque to 8 Nm (69 in-lbs)

Step 6: Refill with the correct fluid

• Lower the truck off the jack stands using the floor jack so it sits level.
• Insert a funnel (long neck) into the transmission dipstick tube.
• Pour in the same amount you measured out using automatic transmission fluid (Nissan Matic S equivalent).
• Add slowly to avoid overfilling.

Step 7: Final level check (hot check)

• Start the engine and let it idle.
• With your foot on the brake, shift through P-R-N-D and back to P, pausing 2–3 seconds in each gear.
• With engine idling in Park on level ground, check the dipstick and top off in small amounts using the funnel (long neck).
• Do not overfill—add a little, recheck, repeat.

---

✅ After Repair

• 🕵️ Inspect for leaks around the drain plug and pan perimeter after a short drive.
• 🧪 Recheck the hot dipstick level once more after 10–15 minutes of driving.
• 🧾 Dispose of used ATF at a recycling center or parts store that accepts fluids.

---

💰 DIY vs Shop Cost

Shop Cost: ₹6,000-₹12,000 (parts + labor)

DIY Cost: ₹2,500-₹6,000 (parts only)

You Save: ₹3,500-₹6,000 by doing it yourself!

Shop labor rates vary but typically run ₹800-₹2,000/hour. This repair takes a shop approximately 1.5-3.0 hours.

---

🎯 Ready to get started?

HowToo makes it easy: same-day/2-day shipping on every part, plus all the tools and specialty tools you need! Check out the parts and tools sections below to add everything to your cart.