Hey There!
brand new here to the forum. I bought my ‘18 two years leftover in Feb 2020. I have about 48k and my coyote consumes a lot of oil. A qt every 1k to 1.5k miles. Have been using Amsoil since new. Has anyone local to Massachusetts gotten their engine covered under warranty?​​​​​​​

 

Since it's that much oil, I'd also consider them doing something about replacing the emissions system.

 

How long did you run the factory oil before switching to Amsoil?

 

I made the switch at the 1st oil change. I had an ‘07 5.4 that I sold w/215k and it burned maybe a 1/2qt every 5k.

 

You don't say, so I have to ask this. When you started using Amsoil, did you use the Ford factory specified viscosity?

- Jack

 

Yup. Definitely not an oil spec/quality issue. I also bought the “updated” pcv valve at Ford but the one I took out was the same as the OE one.
Just wondering if anyone local has had this done and if some dealers are more excited to do it than others. If they’re not selling as many vehicles maybe they’re more inclined to do more warranty work without as much push-back?????

 

Supposedly today's engines do not have a break-in period like they did years ago, but I have to wonder if you possibly switched oil too soon. I know that years ago, if you switched to synthetic too soon, you would have oil consumption issues.

 

There is a known TSB for this. I believe it calls for a RE-flash of the ECU (PCM) (????) so the throttle body doesn’t close completely on an “engine brake” deceleration and a different oil dipstick. Some other information on replacing that PCV valve. Reflash and PCV to reduce the negative pressure/vacuum in the intake that would draw oil.

 

I had the computer re flashed and the new PVC valve installed. And it doesn't work I'm kind of living with the issue I RATHER ADD A QUART OR TWO EVERY 5000 THEN HAVE THE GUYS IN THE BACK OF THE FORD DEALERSHIP TEAR THE ENGINE OUT OF MY NEW TRUCK. WHAT WOULD YOU DO THE WHOLE CAB HAS TO COME UP TO REMOVE THE ENGINE. AND THE ENGINE THEY PUT IN MIGHT HAVE THE SAME ISSUE

 

2 trucks ago I had a '97 F150 with a 4.6. I bought it with 164,000 miles, and it used 1 qt of oil every 800-1000 miles. I sold it with 330,000 miles and added over 100 qts of oil to it. The only emissions related issue was one o2 sensor, and that was an internal heater failure. Yes it sucks that an expensive new truck uses oil, but it's not necessarily a death sentence for the engine unless you are too stupid or lazy to check the oil.

 

ALL the vehicles I've owned in the last 30+ years have never used ANY oil between oil changes, which were done at the mfgr's recommended intervals. I don't think a properly built and maintained engine should use oil, at least during the first 100K miles of life. Personally, I'd want that engine fixed or replaced, DANSCREW and 18coyote.

- Jack

 

my 2018 consumes oil. I usually add a quart at 3,000 miles. and then im about a quart low by the time I do my oil change at 5,000 miles

 

I'm originally from Massachusetts myself and one of my buddies back home is from a big Ford family. His dad had a 2016 f150 coyote that got totaled by someone not paying attention, and he replaced it with a 2018 or 2019 SuperCrew with the Gen 3 coyote.

The truck has used so much oil thankfully the dealer has documented it. And it was so bad that they actually put a catch can on the truck at the dealer. I think it was imperial Ford in Mendon, Ma

 

I have info to let out about all the 5L that are passing oil.
This is not being brought to light until now at 60k + miles after the latest oil change, I keep checking on.
From 2018 on, the 5L blocks have "hard" spray on cylinder liners.
To keep this short, the Piston Rings do not seal very fast.
My pre owned 2018 passed oil from the time of purchase at 28000 miles to 58000 miles.
The news is the oil passage has stopped at just over 60k miles.
The Rings have finally seated, as I suspected.
Back ground:
All oil change intervals and filter at 5k intervals by dealer service using 5w20 MC blend oil.
No TSB done, no other changes or mods done. No dip stick change or PCV change done as has been the reported actions.
No dealer interventions for this issue on my truck even requested...
Bottomline is; DO NOT USE full synthetic oils because those oils further >retard< ring break-in. Yes the oils are good but not in this case.
There is nothing that can be done for faster break-in except run the engine harder to per mote faster wear, in that area.
Changing short blocks or full engines will not solve the issue if no changes to this condition, have been made.
Why the oil passage?
1. Blowby the rings pressurizes the crankcase and forces oil back to the intake system via the PCV valve.
2.The oil that gets by the rings into the combustion process meets with the oil through the intake system and out the exhaust.
This is not good for the CATS.
There is no other cause of all this oil movement.
I waited for this time to come by suspicion, and it's now here.
.
Someone is not being honest about the root cause.
Love the 5L ,a lot of power and good fuel mileage.
Matter of fact, with good ring seal now, the power is even greater by the seat of the pants dyno feel.
Good luck.

 

Update, no loss in oil level.
Changed gas to from 87 Eth to 88 Octane un-leaded, no Ethanol and the lowest cost.
Fuel mileage has improved a noticeable amount after two full tanks and system has adjusted..
I have one more change to make to see if I can crack 24 mpg average on a tank running the same routes and daily driving.
That change is bank 2 Ox sensor is running the LTFT 2 table about 7% richer, to bank 1 at less than 1%.
Looks like that Ox sensor is Lazy operating but not even close to setting a code. The shift would have to be 25% for code set.
There is hope yet!
The system is set up for wide latitude operation failure limits so a CEL is not On, to be of concern, needlessly. You live with the wide variations as normal until a code sets or drivability issue occurs. This keeps the truck out of the repair shop until an issue occurs.
Good luck.