I have a 2012 mustang gt with 5200 miles on it. I changed the oil at the dealer at 3000 miles with the motorcraft synthetic blend 5w20. Today I checked my engine oil with the dip stick and it's a little below the 1st hole. I immediately went to autozone, bought 1 quart of the motor craft synthetic blend and added half the bottle. Is it normal for this engine to be burning oil like this?

 

Yes.

 

what's the reason for it do you know? i know it's a noob question but I'm a young guy and it's my first v8. It's a performance motor and whatnot that's why? I always heard my dad saying that when a car burns a lot of oil the engine isn't good.

 

The engine rings haven't worn into the cylinders yet. You will continue to burn oil until you hit around 10,000 to 15,000 miles depending on your driving habits.

 

alright then, thanks for the information.

 

No problem. Just keep an eye on your oil every now and then

 

As some have said - yes, it appears to be somewhat normal, but not everyone will see a significant amount to add oil.

In my case, my engine would lose about 1 to 1.5 quarts between oil changes until I got closer to 20k miles.

During my last spot check a few days ago, approx 3,000-miles into my oil change (car has 28k miles on it) it read right where it should be, no noticeable consumption.

 

how come the 4.6's didn't do that?

 

The ring s were softer and seated much more quickly.

 

I'm not convinced. I thought rings were seated in the first few hundred miles.

http://www.mototuneusa.com/break_in_secrets.htm

Look at the guys that did 5.0 dyno's right away - that had full hp. Can't do that with weak compression. Or is part of the 5.0's issue the higher compression compared to the 4.6?


If Ford changed the setup so that it takes several thousand miles to seat, they should have informed Dealers and owners - as we've read many have destroyed their engine due to very unusual oil consumption.

 

The cylinder walls and the rings are much harder than they used to be. They don't really lose compression but they let some oil by. The engines Guy here has pulled a 5.0 apart at 13000 miles and it had signs of the rings not seated fully yet.

 

Why? Because honing lines remain? Yet the GT500 ptwa lining shows honing lines for like ever. Yet they don't have an oil consumption issue. Not arguing, just curious.

It might have been more of an engineering issue.

Rumor has it that the 5.0 pistons have been redesigned somewhat (groove area) to reduce 'ring flutter'. Which caused excess blow by and oil consumption. Rings were redesigned too I believe.

 

The block needs the hone marks to operate correctly. A block with no hone marks will trash itself quick.

I haven't heard about the pistons being redisigned but it is possible.

 

So what was the indication your guy used to tell the rings hadn't seated at 13k?

Was it like the pic from Motoman?



Although these pistons came out of engines which were raced for a full season, they weren't set-up with any special clearances or other preparation.

These engines were never worked on prior to being raced. They were totally stock as built by Honda.

The only difference was the break in method they used...

The one on the right was broken in as per MotoMan's instructions.
The one on the left was broken in exactly according to the owner's manual. The resulting leaky rings have allowed pressure to "blow by" down into the crankcase on acceleration, and oil to "suck-up" into the combustion chamber on deceleration.

 

Keep in mind I didn't work on this engine. I would have to ask him how he deturmined the rings hadn't seated. I'm sure it had something to do with the amount of oil and carbon residue in the cylinder. But I didn't work on it so I don't know.

 

I think this is kinda sad a new/newer car burning/still burning oil at 15k miles.

 

Dang owners manual comes thru again.....learn how th check the oil....so much panic over such stupid things. According to the OP, the oil was only a bit below the first hole....right where the manual says it should be.

Copied from the on line version...page 276

6. Wipe the dipstick clean. Insert the dipstick fully, then remove it again.
• If the oil level is between the lower and upper holes, the oil level
is acceptable. DO NOT ADD OIL.
• If the oil level is below the lower hole, add enough oil to raise the
level within the lower and upper holes.
• Oil levels above the upper hole may cause engine damage. Some oil
must be removed from the engine by an authorized dealer.
7. Put the dipstick back in and ensure it is fully seated.

.....Now, tI do agree that some cars are using an odd amount of oil. Mine did until after the first oil change....2 qts I believe......now it is perfect every time I check it.

 

7000 mi. on mine and no noticeable oil consumption here, either.

 

mine's burning oil too. checked the oil when I got it, was at the top of the hash marks, today at 1200 miles its right at the lower hole. that's what, a quart?

 

Mine is still consuming oil with 16k on the clock. I had to give it some throttle the other night pulling out of a gas station and I seen a cloud of smoke behind me in the headlights of another car. I'll take it back in again one of these days.