Normal or not? And where could it be going if there is nothing on the ground where I park. Checked oil today and no oil on the dipstick. Had to add 3 quarts. Changed oil last 6k miles ago. Car is a 12 gt with 14.5k miles

 

Pretty normal for this engine although some claim going 5K without using oil after engine is well broken in (Ford claims 10K to reach this point). I just hit 1K on mine and have used 1/2qt, so that consumption is about the same as yours. However, I would look for that to improve after 10K on the engine. It makes me nervous that you are only checking oil once in 6K miles. That is not good maintenance practice in anybody's book. Hopefully, the 3 quarts low has not caused any excess wear.

 

It's a brand new car it should not be burning that much oil. Nothing on the ground so didn't even think to check till today bc it just didn't feel right. No clunking noise or pinging or any noise for that matter coming from the engine area.

 

But I will def start checking more often now. Once a week from now on

 

Mines consuming a little less, about 1.5 quarts in 3700 miles

 

OK then my car is doing something wrong. I don't use any at all between services and mine is a daily driver too.

 

ooooo...

I burned a quart ~every 1500 miles for the first 6-7K. At 18K now and it's dropped to <qt/5K.

Almost impossible for me to get a good mark on my dipstick, though. I just ensure the lower hole is covered w/oil when I check it warm 15 minutes after shutdown. When it isn't I add a qt then recheck.

 

Ford's 'official' normal is 1 quart per 900 miles, or at least that was the number they were using when I was still in the shop 10 years ago.

 

On anouther thread here there is a rumor that changing the PCB valve to a gt500 PCB valve stopped the consumption. Now I don't know the validity of this rumor but its a cheap fix if it works.

 

GMs for the 3.8 is something around 1qt per 2000miles
Not uncommon for these engines to burn oil.

 

A quart every 900 miles? At that rate, there's no need to ever change your oil...just change the oil filter every 4th top off.

 

Hahaha, good point lol

 

This is what I was thinking. Something ain't right. But I have no lights on the car runs fine. Going to put some passes on it next Thursday at Memphis motorsports park. So we will see what she runs and from those numbers and maybe put the car on the dyno and pull it and she what she puts down. Then ill know for sure nothing is wrong and just enjoy the car.

 

Here too... Mine had about 8000 mi. on it when I had the oil changed I then drove 10 hrs. to NJMP, ran a track day (about 100 mi. on track), and drove all the way home. Did not use ANY oil in about 1100 miles including high-rpm driving. I do have a pass. side catch can, it only had a couple teaspoons of "oil" in it after the trip.

 

Let me rephrase the 900 mile normal - that's what it needs to be below before they'll do anything about it. Some of you may remember the TSB on oil consumption for the 5.0's in the late 80's and that was the number.

The documentation procedure begins with bringing the car in for an oil change, then bringing it back any time oil needs to be added for proper documentation. I don't remember how many miles needed to accrue before it was official. I did so many rerings (with valve seals) that I could have it done in one shift.