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Excessive Oil Consumption in 2020 Equinox 1.5T

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Brittany E. · rep 0 · May 22, 2:32 AM · 1 replies · solved · Question

Vehicle: 2020 Chevrolet Equinox LT 1.5T

Hi all,

I'm reaching out about my 2020 Chevrolet Equinox LT with the 1.5L turbo engine. I've noticed a significant increase in oil consumption lately. I'm having to add a quart of oil every 1,500-2,000 miles, which seems way too high for a car with only 45,000 miles on it.

There are no visible leaks, and I don't see any blue smoke from the exhaust, but the oil level drops consistently. I'm worried about potential long-term damage to the engine or catalytic converter. Has anyone else experienced this with their 1.5T Equinox? What could be causing this?

Thanks for any insights!

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 2:32 AM

0

ClearTheCode admin answer:

Excessive oil consumption in the 1.5L turbo engine found in your 2020 Chevrolet Equinox is a known concern for some owners. While some oil consumption is normal, adding a quart every 1,500-2,000 miles is indeed higher than expected for a relatively new vehicle.

Common Causes:

  1. PCV System Issues: A faulty Positive Crankcase Ventilation (PCV) valve or system can lead to increased oil consumption by allowing oil vapor to be drawn into the intake manifold and burned.
  2. Turbocharger Seals: Worn or failing seals within the turbocharger can allow oil to leak into either the exhaust or intake side, where it is then burned off.
  3. Piston Ring Issues: In some cases, issues with piston rings (e.g., sticking or improper tension) can lead to oil bypassing the rings and burning in the combustion chamber.
  4. Valve Stem Seals: Less common at this mileage, but worn valve stem seals can allow oil to seep into the combustion chamber.

Diagnostics & When to See a Shop:

  • Oil Consumption Test: A dealership or reputable shop can perform a controlled oil consumption test to accurately measure the rate of consumption and document the issue.
  • Inspect PCV System: Have the PCV valve and associated hoses inspected for blockages or failures.
  • Check for OBD Codes: Even without a check engine light, codes like P0420 (Catalyst System Efficiency Below Threshold) can sometimes appear if excessive oil burning is damaging the catalytic converter.
  • Turbocharger Inspection: A mechanic can inspect the turbocharger for signs of oil leakage or shaft play.
  • Professional Diagnosis: It's crucial to have a professional diagnose this issue. Ignoring excessive oil consumption can lead to carbon buildup, spark plug fouling, catalytic converter damage, and eventually, severe engine wear. Document all oil additions and service visits related to this problem.
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