Q: Engine started burning oil, what can I do?

asked by on

I have a 2007 GMC Sierra (automatic trans) that has burning a lot more oil than usual lately. I don’t know what has been causing it. The temperatures are normal and there are no warning lights on the dashboard. I hope this isn’t normal behavior for a truck with 75,000 miles on it. I am disappointed if it is! I am using a quart every 2000 miles now and I am not going to support this issue forever! What can I do?

Your truck is using excessive oil in my opinion. GMC has oil consumption ongoing issues for your year truck and most engines they equipped them with. I would recommend getting an oil consumption test to document the exact amount of oil you are using per 1000 or 2000 miles. This test would be done by your dealer and would start with fresh oil change and all oil entries tamper proofed for accuracy of test. Once test has started, you will have to bring in to have oil added and document amount of oil added and mileage driven. If dealer says it is excessive oil consumption, then a full diagnostics would have to be done to locate cause. This issue may be happening from the pistons oil control rings allowing too much oil to get past them when the piston is on its down stroke. The rings in newer style engines do not have as much tension pushing on cylinder walls as the older year engines did. This is a design to reduce friction and increase gas mileage on all newer engines. The problem is the lower tension rings can allow excessive oil to get by them and cause the oil consumption. To fix your engine, you would have to replace all the piston rings and if new style valve covers apply to your VIN number, then replace them also.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. Engine started burning oil, what can I do?

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: What does the Engine Oil Pressure Light mean on the dash?

Your car’s engine needs oil – it lubricates, reduces friction and ensures a long life. However, it also needs to maintain the right amount of pressure in the engine. If pressure drops, it means there’s something going wrong. The Engine...

Q: Stalls intermittently when making left/pushing down on turn signal

Hello there. I experienced a similar situation a few years ago with a Chevrolet Suburban. In that case, the cause was an electrical fault within the steering column and the turn signal switch. When the switch was pushed upward (to...

Q: Truck stalls sporadically

Hello there. Thanks for writing in about your 2001 GMC Sierra 2500 HD. When faults occur after a repair has been made, the newly repaired item is usually the first place to check. A few possible causes for the stalling...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...