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Excessive Oil Consumption in 2017 TLX V6

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Mike T. · rep 0 · May 26, 3:34 AM · 1 replies · solved · Question

Vehicle: 2017 Acura TLX V6 Technology

Hey there,

I've got a 2017 Acura TLX V6 Technology with about 90,000 miles on it, and I've noticed it's burning through oil much faster than I'd expect. I'm having to add a quart or more between oil changes, which are typically every 5,000-7,000 miles. There are no visible leaks, and no smoke from the exhaust.

I've heard some things about the VCM (Variable Cylinder Management) system in these V6 engines causing oil consumption issues. Could this be what's happening? What are my options here? It's concerning to keep topping off the oil.

Thanks for any advice!

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 26, 3:34 AM

0

ClearTheCode admin answer:

Excessive oil consumption in the 2017 Acura TLX V6, particularly with the J35Y6 engine, is a recognized issue that can often be linked to the Variable Cylinder Management (VCM) system. VCM is designed to improve fuel economy by deactivating cylinders during light-load cruising, but it can lead to problems.

  1. VCM System Operation: When cylinders deactivate, the oil control rings on the pistons in those cylinders can become fouled with carbon deposits due to reduced heat and different lubrication demands. This can cause the rings to stick, allowing oil to bypass them and burn in the combustion chamber.
  2. Software Updates: Acura has released software updates for the VCM system in some models to alter its operation, aiming to reduce the frequency or duration of cylinder deactivation. This can sometimes mitigate oil consumption, but it's not a guaranteed fix for already affected engines.
  3. Oil Consumption Test: The first step for a dealership is typically to perform a controlled oil consumption test. They will top off your oil, seal the dipstick, and ask you to return after a certain mileage (e.g., 1,000 miles) to measure the actual consumption rate. This helps determine if it's outside of Acura's acceptable limits.
  4. Piston Ring Replacement: If the consumption test confirms excessive use and software updates don't help, the most common repair involves replacing the piston rings, especially on the affected cylinders. This is a significant engine repair.
  5. VCM Disabler (Aftermarket): Some owners opt for aftermarket VCM disabler devices that prevent the system from engaging. While these can stop the VCM-related oil consumption, they are not endorsed by Acura and could potentially void parts of your powertrain warranty.

When to see a shop:

  • Immediately if you are adding more than a quart every 1,000-1,500 miles.
  • If you notice any blue smoke from the exhaust, especially on startup or deceleration.
  • For a professional oil consumption test and to check for any relevant technical service bulletins (TSBs) from Acura regarding this issue. There are typically no specific OBD codes for oil consumption itself, but prolonged issues can lead to codes like P030X (misfire codes) if spark plugs foul.
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