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2017 TLX V6 Advance - Concerning Oil Consumption

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Mike T. · rep 0 · May 26, 3:58 AM · 1 replies · solved · Question

Vehicle: 2017 Acura TLX V6 Advance

I have a 2017 Acura TLX V6 Advance with about 90,000 miles on it. Over the past few months, I've noticed that I'm having to add a quart of oil every 2,000-3,000 miles. This seems excessive to me, especially for an Acura engine.

I haven't seen any visible leaks under the car, and there's no smoke coming from the exhaust. The car runs fine otherwise, no warning lights or anything. Is this normal for the J35Y6 engine in the TLX, or should I be concerned? What could be causing this oil consumption?

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 26, 3:58 AM

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ClearTheCode admin answer:

Excessive oil consumption without visible leaks or smoke can be concerning, even for an engine with 90,000 miles. While some oil consumption is normal, adding a quart every 2,000-3,000 miles is on the higher side and warrants investigation for your 2017 Acura TLX V6 (J35Y6 engine).

Here are the common causes:

  1. Worn Piston Rings/Cylinder Walls: As engines age, piston rings can wear, allowing oil to bypass into the combustion chamber and burn off. This is a common cause of internal oil consumption.
  2. Worn Valve Stem Seals: These seals prevent oil from leaking down the valve stems into the combustion chamber. If they harden or wear out, oil can seep past them, especially when the engine is cold or during deceleration.
  3. PCV (Positive Crankcase Ventilation) System Issues: A clogged or malfunctioning PCV valve can lead to excessive crankcase pressure, forcing oil past seals and piston rings. It's a relatively inexpensive part to replace.
  4. Turbocharger Issues (if applicable): While the J35Y6 in the TLX is naturally aspirated, for other engines, a failing turbocharger can burn oil. This is not relevant to your specific vehicle.
  5. Engine Design: Some engines are known to consume more oil than others, but Acura engines typically have good longevity without excessive consumption if properly maintained.

Diagnostics:

  • Oil Consumption Test: A dealership or mechanic can perform a controlled oil consumption test, where they top off the oil, seal the dipstick, and have you return after a certain mileage to measure consumption.
  • Compression/Leak-Down Test: These tests can help diagnose worn piston rings or valve issues by checking the integrity of the combustion chambers.
  • PCV Valve Inspection: A visual inspection and functional check of the PCV valve.
  • Endoscopic Inspection: In some cases, a camera can be used to inspect cylinder walls and valve stems for signs of wear or oil residue.

When to See a Shop:

  • You should schedule an appointment with an Acura dealership or a trusted independent mechanic.
  • While your car isn't showing warning lights now, continued excessive oil consumption can lead to issues like spark plug fouling (which could trigger misfire codes like P0301-P0306), catalytic converter damage, and eventually more serious engine problems.
  • It's important to rule out the simpler, less expensive causes first, such as a faulty PCV valve, before considering more extensive engine work.
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