Skip the auto shop - Our mechanics make house calls

Q: What would cause an engine oil pan gasket to go out at 120,000 miles on a 2008 H2 Hummer?

asked by on

I am being told my engine oil pan gasket needs replacing with only 125,000 miles

My car has 125000 miles.
My car has an automatic transmission.

Hi. The best way to explain why an oil pan gasket would start leaking is due to heat from running the engine which causes expansion and the engine cooling when not running which equals shrinkage. Over time, things just wear out. There is a possibility that the oil pan just needs to be tightened. Check all oil pan bolt and make sure they are not loose. Keep in mind that this does not always fix the leak. The truly best thing to do is if it is leaking, is replace it with a new gasket. If you are looking to have this done, a certified professional from YourMechanic can come to your location to perform this service at your convenience.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 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
  • Home
  • Questions
  • What would cause an engine oil pan gasket to go out at 120,000 miles on a 2008 H2 Hummer?

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: Roland, does the 2007 4.7 liter with the plastic intake manifold have coolant passing through to cool the manifold?

Hello. It does not appear that the intake manifold on that model has coolant passages, so it is unlikely that that is the cause of the issue. I would still carefully examine the intake manifold for any signs of warping,...

Q: Intermittent issue where car is stuck in first after coming to full stop, and speedometer stays at zero

You have two symptoms that are pointing to the same problem. Both your speedometer, and your transmission, use the VSS (vehicle speed sensor). The transmission uses the data to calculate shift points. If there is not any output, the computer...

Q: My engine oil keeps leaking away on coldstart

Since you only see the oil leaking when the engine is cold then you should check to see if the oil is coming from the oil filter or filter housing. Check the oil filter tightness first and see if it...

Related articles

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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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...