GT 5.0 oil leak

[S140]

Hi all currently having a similar oil leak issue, ford dealer is unable to identify the cause of the leak..any suggestions? 2018 GT 5.0, 21,000 miles. Oil seems to be collecting around the transmission area, ford have replaces the oil pan gasket but there still seems to be a slow leak somewhere.

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[WildHorse]

That's the rear main. If your dealer is unable to ID it they are morons.

 

[S140]

That's the rear main. If your dealer is unable to ID it they are morons.

Thank you, they’ve had it for 2 weeks and still running ‘tests’ with no idea where its coming from...morons is exactly what they are!

 

[Chappers]

Could this have the issue where the head bolts are loose that 15-17s have?

 

[WildHorse]

Could this have the issue where the head bolts are loose that 15-17s have?

You'd have bigger problems. Also never heard of that. Gotta link to the TSB ?

 

[S140]

Due to get an update from the dealer on Monday so will report back.

 

[Hadelson]

That's the rear main. If your dealer is unable to ID it they are morons.

For sure they know what that is. Just trying to avoid the warranty work to replace the main seal

 

[S140]

Thanks i will mention the main seal tomorrow to them!

 

[raptor17GT]

You'd have bigger problems. Also never heard of that. Gotta link to the TSB ?

not headbolts but cam cover bolts, not sure if similar issues with oil dripping down the back.
https://www.mustang6g.com/forums/threads/cam-cover-oil-leak-warning.159179/

 

[WildHorse]

not headbolts but cam cover bolts, not sure if similar issues with oil dripping down the back.
https://www.mustang6g.com/forums/threads/cam-cover-oil-leak-warning.159179/

You'd figure the dealership techs woulda seen that.

 

[raptor17GT]

not headbolts but cam cover bolts, not sure if similar issues with oil dripping down the back.
https://www.mustang6g.com/forums/threads/cam-cover-oil-leak-warning.159179/

You'd figure the dealership techs woulda seen that.

you would think so but...

 

[S140]

Spoke to the dealer…still no further forward, they are planning to remove the starter motor tomorrow to see if they can trace the leak or see anything around the flywheel before committing to any ‘big repairs’ - uselesss!!!

 

[raptor17GT]

ffs! They mechanics or lego merchants ? Another dealer

 

[Gloucesternige]

Spoke to the dealer…still no further forward, they are planning to remove the starter motor tomorrow to see if they can trace the leak or see anything around the flywheel before committing to any ‘big repairs’ - uselesss!!!

First things first, although your car may have been registered in 2018, it is actually a "17" in Mustang talk. An '18 has a completely different engine, known as the Gen 3. Your engine is a Gen 2.

OK, back on topic.. you may be able to diagnose this yourself? I'm not sure how mechanically minded you are, so I'll simplify how I explain this.. On top of each cylinder bank there is a large flat black plastic cover. These are the cam covers. With the engine cool or cold, run your finger around the edge of each cover. The joint where the bolt onto the engine should be dry.

If you find any wet areas, particularly around the rear this MAY be your problem.

If your dealer changed the sump gasket because he thought that was where the oil was coming from, it would have been apparent as there would have been oil down the sides of the sump and around the joint?

If he is now going to remove the starter to look for oil on the "flywheel", (Your car doesn't have a flywheel BTW, it has a drive plate, or flex plate) this may tell him nothing, as more often than not the oil doesn't get onto the flywheel if the rear seal is gone.

Another point to check, is the oil leaking from the cooler and blowing back onto the bellhousing?

One other point.. is this engine oil or transmission oil?

 

[V8_MOTOR]

Check the rear of valve covers and also the seals.

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