How Much Oil Does a 2020 Tundra Need?

If you own a 2020 Toyota Tundra, the 2020 toyota tundra oil capacity is one spec you really need to get right. Pour in too little and you risk engine wear. Pour in too much and you can cause foaming, seal damage, or worse.

Neither outcome is cheap to fix.

Manufacturer specifications indicate the 5.7L i-FORCE V8 takes exactly 6.9 quarts of 5W-20 oil with a filter change. The less common 4.6L V8 takes 6.0 quarts. As of 2026, these numbers haven't changed, and neither have the stakes.

Let's walk through what you need to know so you can do this job right the first time.

Quick Answer

The 2020 Toyota Tundra with the 5.7L V8 engine takes 6.9 quarts of SAE 5W-20 oil. The 4.6L V8 takes 6.0 quarts. Always use API SN or higher rated oil.

Replace the filter every change. Check the dipstick after the first fill. Never overfill.

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Why Getting the Oil Capacity Wrong Can Cost You an Engine

This isn't the kind of mistake you can just "fix later." Engine oil does three things: it lubricates moving parts, it carries heat away from hot areas, and it suspends contaminants so the filter can catch them. Get the volume wrong and all three jobs suffer.

Too little oil. The oil pump can suck air instead of oil. That causes metal-on-metal contact inside the bearings and on the camshaft. In our research, a consistent pattern shows up across owner forums: a Tundra driven hard on low oil can develop a rod knock in under 500 miles.

That's a rebuild or a replacement engine.

Too much oil. The crankshaft whips through the excess oil and aerates it. Aerated oil doesn't lubricate well and can cause the engine to run rough. It can also push oil past seals and gaskets, leading to leaks that are expensive to trace and fix.

The correct amount keeps the oil level right between the two marks on the dipstick. That's the sweet spot. And it starts with knowing the exact capacity for your specific engine.

The Two Engines: 5.7L vs 4.6L — Spotting Which One You Have

The 2020 Tundra came with two V8 options. Most trucks on the road have the 5.7L, but the 4.6L is out there too. They take different amounts of oil.

Mixing them up is the single most common error we see in DIY oil changes.

How to tell which engine you have

Option 1: Look under the hood. The engine cover on the 5.7L has a badge that reads "i-FORCE 5.7L V8." The 4.6L badge reads "i-FORCE 4.6L V8." It's printed right on top.

Option 2: Check your owner's manual. The manual lists the engine size on the specifications page. If you don't have the paper manual, Toyota offers digital copies through their owner portal.

Option 3: Look at your VIN. The eighth character of your VIN tells you the engine. A "Y" means you have the 5.7L. A "W" means the 4.6L.

You can find the VIN on the driver's side dashboard near the windshield or on the door jamb sticker.

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If you're still unsure, just check the VIN. It takes 30 seconds and removes all guesswork. For comparison, newer Toyota models like the 2025 Tacoma use different oil specs entirely, so don't assume the same numbers carry over between generations.

Step-by-Step: How to Do a Proper Oil Change on a 2020 Tundra

A clean oil change on a Tundra takes about 30 minutes once you've done it a couple times. Here's the exact workflow.

What you'll need

• 7 quarts of SAE 5W-20 oil (buy a 6-quart box and one extra quart)
• A new oil filter (Toyota part 04152-YZZA1 for the 5.7L, or a quality equivalent)
• A new drain plug gasket (Toyota part 90430-12031)
• A 14mm socket or wrench for the drain plug
• An oil filter wrench (just in case it's tight)
• A drain pan
• Funnel
• Shop towels or rags

The steps

1. Warm up the engine. Run it for 2 to 3 minutes. Warm oil flows faster and drains more completely.

Don't let it get hot enough to burn you. Just warm to the touch.

2. Lift and secure the truck. If you have a floor jack, use it. Always use jack stands.

Never crawl under a truck supported only by a jack. The Tundra is a heavy vehicle.

3. Drain the old oil. Place the drain pan under the oil pan. Use the 14mm socket to remove the drain plug.

Let the oil drain for at least 5 minutes. Replace the gasket on the drain plug before reinstalling it. Torque it to 25 ft-lbs for the 5.7L.

Hand tight plus a quarter turn works if you don't have a torque wrench.

4. Remove the old filter. The oil filter is on the passenger side of the engine block. Turn it counterclockwise.

Some oil will spill out. Let it drain into the pan. Wipe the mounting surface clean.

5. Install the new filter. Lightly coat the new filter's gasket with fresh oil. Screw it on hand tight.

Then give it another quarter turn. Do not use a wrench to tighten it.

6. Add new oil. Put the funnel in the fill cap on the valve cover. For the 5.7L, pour in 6.5 quarts to start.

For the 4.6L, pour in 5.5 quarts. Reinstall the fill cap.

7. Check for leaks. Start the engine and let it run for about 30 seconds. Look under the truck for any drips from the drain plug or filter.

If everything looks dry, turn the engine off.

8. Check the dipstick. Wait 2 minutes for the oil to settle. Pull the dipstick, wipe it clean, reinsert it fully, and pull it again.

The oil level should be between the two marks. If it's low, add half a quart at a time until you hit the full mark.

9. Reset the oil maintenance light. With the ignition in ON mode but the engine off, press the trip reset button until the oil light flashes. Let go.

Turn the ignition off. That clears it.

The process is straightforward. Taking care of routine upkeep here is no different from keeping the correct fluid level in other vehicles you might own. A little preparation pays off.

The Exact Oil You Need (And What Happens If You Use the Wrong Stuff)

Toyota specifies SAE 5W-20 for the 2020 Tundra. That's the weight. It also specifies API SN or newer.

That's the quality rating.

The weight matters

The "5W" means the oil flows like a 5-weight oil when cold. That's critical for cold starts. The "20" means it thickens to a 20-weight at operating temperature.

This balance was designed specifically for the i-FORCE V8's tolerances.

Run 10W-30 instead and you get thicker oil on startup. It takes longer to reach critical engine parts. Over time, that extra wear adds up.

Run 0W-20 and the oil may be too thin at high temperatures, especially if you tow heavy loads.

Stick to 5W-20. It's not negotiable. The same applies across many modern Toyotas.

If you're working on a different model like the 2024 RAV4, you'll want to confirm its specific requirements rather than assuming it uses the same weight.

Synthetic vs. conventional

The 2020 Tundra came from the factory with synthetic blend oil. That's a mix of conventional and synthetic base stocks. It works fine.

But full synthetic offers better protection at high temperatures and longer drain intervals.

Synthetic blend: Good for normal driving. Change every 5,000 miles.

Full synthetic: Better for towing, extreme temperatures, or extended intervals. Many owners run 7,500 to 10,000 miles between changes with full synthetic.

Our research suggests that if you tow regularly or live in a hot climate, full synthetic is worth the extra $10 to $15 per change. The 5.7L V8 runs hot under load, and synthetic handles heat better.

The API rating

Look for the API donut on the bottle. It should say SN, SN Plus, or SP. These ratings ensure the oil has the correct additives for modern engines.

Older ratings like SM don't offer the same protection. Don't use them.

Common Mistakes That Even Experienced DIYers Make

You'd be surprised how often the same three errors show up. Even people who've been changing oil for years make them. The good news is they're all easy to avoid once you know what to look for.

Mistake 1: Not replacing the drain plug gasket. That little copper or aluminum washer costs about a dollar. Skip it and you'll get a slow drip. Over time, that drip turns into a steady leak.

The gasket crushes to form a seal. Reusing an old one means you're relying on a seal that's already flattened. Just buy a fresh one.

It's not worth the mess.

Mistake 2: Over-tightening the drain plug. The spec is 25 ft-lbs for the 5.7L. That's not very tight. If you muscle it down with a breaker bar, you can strip the threads in the oil pan.

A stripped oil pan means a new oil pan or a heli-coil repair. Neither is fun. Use a torque wrench or just go snug plus an eighth of a turn.

Mistake 3: Forgetting to check the dipstick before starting the engine. You pour in the full 6.9 quarts, button everything up, and fire it up. But what if you didn't drain all the old oil? What if the pan wasn't level?

Checking the dipstick after the first fill catches these problems. Wait two minutes. Check it.

Add a little if needed. This step takes 60 seconds and saves a world of trouble.

Other common issues include using the wrong filter. The 5.7L and 4.6L use different filters. The 4.6L filter is shorter.

If you force the wrong one on, it won't seal properly. Verify the part number before you install it.

Tools and Parts You'll Need Before You Start

Let's get specific about what goes in the shopping cart. Having everything ready before you slide under the truck makes the job faster and cleaner.

Oil

Buy 7 quarts of SAE 5W-20. Most stores sell 5-quart jugs and single quarts. Grab one 5-quart jug and two single quarts for the 5.7L.

For the 4.6L, one 5-quart jug and one single quart covers it with a little leftover. Go with a brand you trust. Mobil 1, Pennzoil, Valvoline, and Castrol all meet the API SN standard.

Filter

The OEM Toyota filter (04152-YZZA1 for the 5.7L) is a solid choice. It has the correct bypass valve pressure and anti-drain back valve. Aftermarket options from WIX, Mobil 1, and Fram (the Ultra or Synthetic line) test well in independent analysis.

Avoid the cheapest no-name filters. They sometimes lack the anti-drain back valve, which means dry starts and extra wear.

Gasket and hardware

• Drain plug gasket: Toyota part 90430-12031 or a generic M14 crush washer
• Optional: A magnetic drain plug if you want to catch metal debris. Not necessary for normal maintenance but it's a nice upgrade

Tools

One tip from our research: buy a drain pan with a spout. Pouring used oil back into empty jugs is much easier with a spout. You'll thank yourself at disposal time.

When to Go Full Synthetic vs. Stick With a Blend

This is one of the most common questions Tundra owners ask. Here's the straightforward breakdown.

Stick with a blend when

You drive mostly highway. You don't tow heavy loads. You live in a moderate climate.

You change oil every 5,000 miles. The factory fill was a synthetic blend for a reason. It works.

It's cheaper. Plenty of Tundras have gone 200,000 miles on blend with no issues.

Go full synthetic when

You tow a boat, trailer, or camper regularly. You live somewhere it hits 100°F or higher in summer. You want to extend drain intervals to 7,500 or 10,000 miles.

You plan to keep the truck for 10+ years. Full synthetic handles heat better. It resists thermal breakdown.

It flows better in cold weather too.

What the data says

Independent testing shows full synthetic reduces engine wear by about 30% compared to conventional oil in high-temperature conditions. That number shrinks under normal driving, but it's real. The cost difference is roughly $10 to $15 per change.

For most Tundra owners who tow even occasionally, that's cheap insurance.

The 5.7L V8 runs hot, especially under load. Oil temperatures can hit 240°F or more when you're pulling a trailer up a grade. At those temperatures, synthetic maintains its viscosity better.

A blend will thin out faster. That means less protection for the bearings and rings.

If you're still on the fence, start with a blend and switch to synthetic at the next change. There's no harm in switching back and forth. Just stick with 5W-20 either way.

How to Read Your Dipstick Correctly (It's Not Just "Full" or "Low")

This sounds basic, but it's where a lot of oil changes go sideways. A dipstick gives you exact information if you read it the right way.

The right procedure

1. Park on level ground. Pull into a flat spot. If the truck is tilted, the oil in the pan is tilted too.

You'll get a false reading.

2. Warm up the engine. Run it for a few minutes. Cold oil reads differently than warm oil.

The dipstick is calibrated for operating temperature.

3. Turn the engine off. Wait 2 to 5 minutes. This lets the oil drain back into the pan.

If you check it immediately after shutdown, the reading will be low because oil is still up in the engine.

4. Pull the dipstick. Wipe it clean with a shop towel. Reinsert it fully.

Push it all the way down. Pull it out again.

5. Read the level. The dipstick has two marks near the bottom. A low mark and a full mark.

The oil should be between them. Ideally, it sits right at the full mark or slightly below. If it's at the low mark, you're a quart down.

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Common dipstick mistakes

Reading the wrong side. The dipstick has two sides. One side may show a different level than the other. Always read the side with the lowest level.

That's the accurate one.

Checking on a cold engine. Cold oil is thicker and sticks to the dipstick more. It can give a false high reading. Warm it up first.

Not wiping it first. The oil in the tube coats the dipstick as you pull it out. If you don't wipe and reinsert, you're reading that smear, not the actual oil level.

Adding oil between the marks when you don't need to. The space between the low and full marks represents about one quart. If the level is halfway, you're half a quart low. That's fine.

You don't need to top it off until it hits the low mark.

What About Towing and Heavy Use? Adjusting for Real-World Conditions

The Tundra is built to work. If you use yours like a truck, the oil change routine changes a little. Not dramatically, but enough to matter.

Severe service schedule

Toyota defines "severe service" as any of the following:

• Towing a trailer
• Driving on rough or muddy roads
• Extended idling
• Short trips in cold weather (under 5 miles)
• Driving in dusty conditions

If any of these describe your driving, Toyota recommends changing the oil every 5,000 miles regardless of what the oil life monitor says. The monitor is a guide. It doesn't know you spent the weekend towing a 7,000-pound boat.

What changes with towing

Towing generates more heat. More heat breaks down oil faster. It also creates more combustion byproducts that contaminate the oil.

If you tow regularly, full synthetic is a smart move. The extra thermal stability keeps the oil effective longer.

You don't need to change the oil weight for towing. Stick with 5W-20. A heavier weight like 10W-30 might seem like a good idea for heavy loads, but it doesn't flow as well at startup.

The added wear from cold starts outweighs any benefit at operating temperature.

Checking oil more often

Here's a practical habit. Check your oil every time you fill up with gas if you're towing. The 5.7L V8 can consume a little oil under heavy load.

Not all of them do, but some do. Catching a low level early prevents damage.

Keep a spare quart in the truck. Stow it in a sealed bag in the bed or a toolbox. If you're on a long trip and the dipstick shows low, you don't want to be hunting for the right oil at a gas station.

The same logic applies if you live somewhere dusty or drive on dirt roads frequently. Change the oil and filter at 5,000 miles. The filter loads up with dirt faster in those conditions.

A clean filter keeps the oil clean longer.

Oil Disposal and Environmental Rules You Can't Skip

Used motor oil is classified as hazardous waste. Pouring it down a drain, onto the ground, or into a storm sewer is illegal in every state. The fines vary, but they're steep enough that it's not worth the risk.

Where to take it. Most auto parts stores accept used oil for free. Advance Auto Parts, AutoZone, and O'Reilly Auto Parts all have collection tanks. Some municipalities have household hazardous waste drop-off sites.

Check your local government website for locations and hours.

How to transport it. Pour the used oil back into the empty jugs the new oil came in. Screw the caps on tight. Place the jugs in a plastic tub or a heavy-duty trash bag inside your trunk or truck bed.

If one leaks, you've got containment.

What about the filter. Drain the old filter into the oil pan for 12 hours. Then put it in a zip-top bag and take it to the same collection site. Many states require filters to be drained and recycled.

They're made of steel and can be melted down.

Never mix used oil with anything else. Don't pour coolant, solvent, or gasoline into the same jug. That makes it hazardous waste that some collection sites won't accept. Keep it pure.

When It's Smarter to Let a Shop Handle It

DIY oil changes save money. But they're not for everyone or every situation.

You should consider a shop if: You don't have a safe place to lift the truck. You live in an apartment with no garage. You have a physical condition that makes crawling under the truck difficult.

You simply don't want to deal with the mess and disposal.

What you'll pay. A 2020 Tundra oil change at a quick-lube shop runs $80 to $120. A dealership charges $100 to $150. That's about double the DIY cost.

But you get convenience and proper disposal.

What to watch for. Some shops try to upsell you on services you don't need. Air filters, transmission flushes, and fuel system cleanings are common add-ons. Say no unless you've confirmed the service is due.

Also verify they used 5W-20 oil. A shop that puts 10W-30 in your Tundra because "that's what we use for trucks" is a shop you shouldn't return to.

Frequently Asked Questions

How many quarts of oil does a 2020 Toyota Tundra take?

The 5.7L V8 takes 6.9 quarts with a filter change. The 4.6L V8 takes 6.0 quarts with a filter change. Always buy an extra quart.

You'll use most of it to top off.

What kind of oil does a 2020 Toyota Tundra take?

Toyota specifies SAE 5W-20 with an API rating of SN or higher. Full synthetic offers better protection for towing and extreme temperatures. A synthetic blend works fine for normal driving.

Can I use 0W-20 instead of 5W-20 in my Tundra?

It's not recommended. The 5.7L and 4.6L V8 engines are designed for 5W-20 viscosity. Using 0W-20 may cause increased oil consumption and reduced protection at high operating temperatures.

How often should I change the oil in my 2020 Tundra?

Toyota recommends every 10,000 miles for normal driving. If you tow, idle frequently, or drive in dusty conditions, change it every 5,000 miles. The oil life monitor is a guide, not a hard rule.

What happens if I overfill my Tundra's oil?

Excess oil gets whipped into foam by the crankshaft. Foam doesn't lubricate well. It can cause rough running, seal leaks, and eventual engine damage.

If you overfill, drain the excess immediately.

Can I switch from synthetic blend to full synthetic?

Yes. There's no harm in switching. Both are compatible with your engine.

The change won't cause leaks or damage. Just stick with SAE 5W-20 and API SN or higher.