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Discussion Starter #1
I have a 2006 Cobalt and have a new oil leak on the bottom of the motor do you know what this could be


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Probably coming from above, maybe the oil pressure sending unit's diaphragm has failed or a valve cover gasket.

I'm surprised your oil pan isn't leaking, it's got a nice ding.
 

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Discussion Starter #4
Or is it AC Delco d 18498 for $11.38 on RockAuto and is this located on the front right above the starter
 

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Is it where it's leaking from? And yes it's on the front above the starter.
 

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Discussion Starter #6
There was oil dripping off the starter but I cleaned it all up and change the oil this morning I just drove it 5 miles and there's not oil near the starter only on the bottom in the picture so I don't think the pressure switch is leaking but I can't be sure
 

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Best way is to shampoo the engine and clean as much as you can then take it out for a drive and check it. Did you change the oil before the picture or after?
 

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Discussion Starter #8
The picture was after I changed the oil it's fresh oil leaking I'll try the shampoo this week and thanks
 

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Possible if the rear main seal was leaking.
 

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I had an oil leak in the same spot a few years ago on my 2006 Pontiac G5/Pursuit...Maybe I was lucky but a can of Bar's Leaks Rear Main Seal Repair and 2 oil changes later (using Motormaster 5w30 high mileage oil ), the leak was gone and hasn't come back !!!!! Good luck.
 

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Discussion Starter #12
I had an oil leak in the same spot a few years ago on my 2006 Pontiac G5/Pursuit...Maybe I was lucky but a can of Bar's Leaks Rear Main Seal Repair and 2 oil changes later (using Motormaster 5w30 high mileage oil ), the leak was gone and hasn't come back !!!!! Good luck.
Sounds like a good idea when Coby told me it might be a main bearing I thought Lucas Oil engine oil stop leak so I put in a quart and I'll see what happens

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