2017 Chevrolet Malibu Burning Oil: Causes & Fixes

Is your 2017 Chevrolet Malibu constantly thirsty for oil, requiring frequent top-offs between scheduled changes? This can be a frustrating and concerning issue for any driver, often accompanied by a burning oil smell or even visible smoke from the exhaust. Excessive oil consumption is a known problem for some vehicles, and your 2017 Malibu, particularly models equipped with the 1.5L LFV engine, may be susceptible to specific causes that lead to oil loss.

What drivers notice on this 2017 Chevrolet Malibu

Drivers of a 2017 Chevrolet Malibu experiencing excessive oil consumption typically report a few key observations:

• Frequent oil level checks and top-offs: The most obvious sign is needing to add a quart or more of oil every few thousand miles, or even sooner, well before the recommended oil change interval.
• Burning oil smell: A distinct odor of burning oil, especially noticeable after driving, while idling, or when the engine is warm.
• Blue or gray smoke from the exhaust: This is often visible during acceleration, deceleration, or upon cold start-up, indicating oil is being burned in the combustion chambers.
• Rough idling or misfires: Fouled spark plugs due to oil burning can lead to engine performance issues.
• Check Engine Light: While not always immediate, severe oil consumption can eventually trigger a Check Engine Light due to issues like catalytic converter damage or persistent misfires.

At a glance: difficulty, repair cost, and diagnostic workflow

• Difficulty Rating: 6/10 — Easy to moderate
• Common Symptoms: Reduced oil life monitoring system accuracy: The vehicle's oil life monitor may still show good oil life, even if the ac; Oil stains or leaks: While distinct from burning, external leaks can contribute to low oil levels. Always differentiate ; Carbon buildup on exhaust tips: Excessive oil burning can leave a sooty, oily residue on the tailpipe.; Decreased fuel economy: While not always directly noticeable, an engine burning oil may not be operating at peak efficie
• Estimated Repair Cost: $100–$800 (parts + typical shop labor)
• OEM Tooling Required: Standard OBD-II scanner and hand tools

Diagnostic workflow:

1. Confirm the symptom on your vehicle.
2. Scan for stored or pending codes with an OBD-II tool.
3. Inspect the most common causes in this guide (visual checks first).
4. Run verification tests before replacing parts.
5. Repair, clear codes, and verify on a test drive.

Symptoms and warning signs

Beyond just needing to add oil, several other symptoms can point to your 2017 Chevrolet Malibu burning oil:

• Reduced oil life monitoring system accuracy: The vehicle's oil life monitor may still show good oil life, even if the actual oil level is dangerously low.
• Oil stains or leaks: While distinct from burning, external leaks can contribute to low oil levels. Always differentiate between burning and leaking.
• Carbon buildup on exhaust tips: Excessive oil burning can leave a sooty, oily residue on the tailpipe.
• Decreased fuel economy: While not always directly noticeable, an engine burning oil may not be operating at peak efficiency.
• Engine noise: In severe cases, prolonged low oil levels can lead to increased engine wear and unusual noises.

How to verify and confirm the issue

Confirming excessive oil consumption in your 2017 Chevrolet Malibu involves a systematic approach:

• Regular dipstick checks: Establish a baseline. Top off the oil to the full mark, drive for 500-1000 miles, then recheck the dipstick. Document how much oil is needed to bring it back to full. This is the most direct way to measure consumption.
• Visual inspection: Look for external oil leaks around the engine, oil pan, valve cover, and turbocharger (if equipped). While leaks cause oil loss, they are different from burning.
• Exhaust smoke analysis: Observe the exhaust during cold starts, acceleration, and deceleration. Persistent blue or gray smoke is a strong indicator of oil burning.
• Spark plug inspection: Remove and inspect spark plugs. Oil-fouled spark plugs will appear black, wet, and sooty, indicating oil is entering the combustion chamber.
• PCV system check: Inspect the PCV valve and hoses for cracks, blockages, or improper function. A malfunctioning PCV system is a common cause of oil consumption in the 1.5L LFV engine.
• OBD-II scanner check: Use an OBD-II scanner to check for any stored diagnostic trouble codes (DTCs), especially those related to misfires (P030X), O2 sensor performance, or catalytic converter efficiency, which can be secondary effects of oil burning.
• Compression and leak-down test: For more severe cases, these tests can identify worn piston rings or valve seals by measuring cylinder pressure and air leakage.

Common causes (most likely first)

For the 2017 Chevrolet Malibu, especially models with the 1.5L LFV engine, the following are the most common causes of excessive oil consumption:

• PCV System Issues (1.5L LFV engine specific): The 1.5L LFV engine in the 2017 Malibu is prone to issues with its PCV system, particularly the fixed orifice PCV valve integrated into the intake manifold. A clogged or malfunctioning PCV system can lead to excessive crankcase vacuum, pulling oil directly into the intake manifold and combustion chambers.
• Worn Valve Seals: Over time, the rubber seals around the valve stems can harden or wear out, allowing oil to seep past them into the combustion chamber, especially during deceleration or cold starts.
• Worn Piston Rings: Damaged or worn piston rings (compression rings or oil control rings) can fail to properly scrape oil from the cylinder walls, allowing it to burn during combustion. This is a more serious and costly repair.
• Turbocharger Oil Seals: If your Malibu has a turbocharger, its internal oil seals can fail, allowing oil to leak into the exhaust or intake side of the turbo, where it is then burned.
• Incorrect Oil Viscosity or Type: Using an oil that doesn't meet GM's dexos1™ specifications or is of an incorrect viscosity can contribute to consumption, though this is less common than mechanical issues.

Related guides on this vehicle

• 2018 Chevy Equinox Burning Oil: Causes, Fixes & Costs
• 2020 Chevy Equinox Burning Oil: Causes & Fixes
• 2019 Equinox Low Oil Light Comes On Frequently: Excessive Consumption

Step-by-step diagnosis and fixes

1. Verify Consumption: Perform the dipstick check as described above to quantify oil loss.
2. Visual Inspection: Look for external leaks. Address any leaks first, as they can mask burning.
3. Inspect PCV System (1.5L LFV focus):
   • Check the PCV hose from the valve cover to the intake manifold for cracks or clogs.
   • For 1.5L LFV, inspect the intake manifold for signs of oil accumulation, which can indicate the internal PCV orifice is faulty or clogged. Sometimes, the entire intake manifold needs replacement to address this.
   • Consider replacing the valve cover if it has an integrated PCV system that is known to fail.
4. Spark Plug Analysis: Remove and inspect all spark plugs. Oily plugs confirm internal burning and can help narrow down which cylinders are affected.
5. Compression and Leak-Down Test: If PCV and external leaks are ruled out, these tests will help determine if piston rings or valve seals are the culprits. A professional technician is usually needed for accurate results.
6. Turbocharger Inspection: If equipped, check for excessive shaft play or oil residue in the turbocharger's intake or exhaust pipes.
7. Engine Flush/Cleaning: In some cases of minor oil consumption due to sludge buildup, a professional engine flush might help free up sticky piston rings, but this is a less common solution for severe issues.

Repair options and cost factors

The cost to address your 2017 Chevrolet Malibu burning oil can vary significantly based on the underlying cause:

• PCV System Repair: If the issue is a clogged PCV valve or a faulty valve cover (which often integrates the PCV), costs can range from $200 to $600. This might involve replacing the intake manifold on 1.5L LFV engines.
• Valve Seal Replacement: Replacing valve seals is a more involved repair, often requiring removal of the cylinder head. This can range from $800 to $1,500.
• Turbocharger Replacement: If the turbocharger's oil seals are the problem, a new or remanufactured turbo can cost $1,000 to $2,000+ for parts alone, plus labor.
• Piston Ring Replacement/Engine Rebuild: This is the most extensive and costly repair, often requiring engine removal and disassembly. Costs can easily exceed $2,500 to $4,000+, making it a significant investment.
• Labor Costs: Expect labor rates to vary by region and shop, typically ranging from $80 to $150 per hour.

Always obtain a detailed diagnostic report and repair estimate before proceeding with any significant work.

When to see a professional

While some initial checks can be done at home, it's advisable to see a professional technician if:

• You've performed basic checks and cannot identify the source of the oil consumption.
• You observe significant blue smoke from the exhaust.
• The Check Engine Light illuminates.
• You suspect internal engine damage (e.g., piston rings, valve seals).
• You lack the specialized tools (e.g., compression tester, bore scope) or experience for complex engine diagnostics.
• You're unsure about the next steps after initial troubleshooting.

A qualified mechanic can perform advanced diagnostics, including compression and leak-down tests, to accurately pinpoint the problem and recommend the most effective repair. You can find more information on general vehicle maintenance and repair by browsing our All repair guides.

Frequently asked questions

Is it normal for a 2017 Chevrolet Malibu to burn oil?

While a very small amount of oil consumption is considered normal in any engine over a long period, requiring frequent top-offs (e.g., a quart every 1,000-2,000 miles) is not normal for a 2017 Chevrolet Malibu and indicates an underlying issue that needs attention.

Can I continue to drive my Malibu if it's burning oil?

Driving with excessive oil consumption can lead to serious engine damage if the oil level drops too low, potentially causing catastrophic failure. It can also damage the catalytic converter due to oil residue. It's best to diagnose and repair the issue promptly.

What type of oil should I use in my 2017 Malibu to prevent burning?

Always use the oil specified in your owner's manual, which for most 2017 Chevrolet Malibu models is a dexos1™ Gen 2 approved full synthetic 5W-30 oil. Using the correct oil and maintaining regular change intervals is crucial for engine health, though it may not prevent consumption if a mechanical issue exists. For more model-specific information, visit our Malibu model hub.

Sources and further reading

• Chevrolet vehicle hub
• Browse vehicles

This information is for educational purposes only and is not a substitute for OEM service procedures. Always consult a qualified technician for safety-critical work and specific diagnostic procedures for your vehicle.

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