I have a 2009 Honda Accord.  Over the past several months, I've noticed a grinding sound immediately after cold-starting the engine.  It only lasts for a fraction of a second, doesn't continue once the engine is running, and doesn't happen if I shut the engine off and start it again a few minutes later.

A little background:

The car has 92,000 miles on it.  I've noticed that it burns oil pretty quickly, so I keep an eye on it and make sure to add more if needed.  Most recently, I got an oil change with a high mileage synthetic, but that has not solved the issue.

Does anyone know what this could be?  Is it a big deal?  I'm obviously worried about damaging the engine.  Is this a major thing?  Or is it something I can live with, provided I don't mind the frightening noise that occurs on startup.

Any help you can give is greatly appreciated!


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