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Hi Jdsander. Our vehicles are designed to run on 87-89-91-93 octane. As an example, I run 87 octane fuel all the time in my 2018 MKZ 3.0T and have had absolutely no issues in almost 7 years.   A properly operating 3.0T MKZ should have no issues with 87 octane fuel, unless it was poor quality fuel (as you mentioned) and/or there is some other type of powertrain issue.   That being said...Do what you think is best for your circumstances, keep us updated and good luck.    

Thank you for the input. Well a little digging and it seems some of the 2.0 turbo folks have had a similar problem when they try running either 87 or mid-grade/plus. I have been running it on premium for five years but on the way back from that road trip, my last fill up was about 80 miles from home, the station was being renovated, and they did not have premium so I put in a fill up with plus grade. I did not drive it for two days and then the CEL came up.  Between then and this week when I  picked it up from the dealer, it was down to about 6 gallons. I filled it up with premium ( 93 octane) and so far no problems. I may could have been bad gas, or it just does not like lower grades. Whatever the case I am thinking a tank or two of the good stuff will fix the problem.

Hi Jdsander. Can't believe they even recommended that. 🙄   As long as the CEL is not flashing, simply drive and run the tank down to half or so and fill it with regular. Then do it again. That will sufficiently dilute the premium fuel. Therefore, if it is an issue with the premium fuel (I highly, highly doubt it), then it should fix itself with one half tank fill-up. And after some driving with no misses or other related issues, the CEL will reset itself.   I am sure others will jump in with more advice, so keep us updated and good luck.

The P0300 engine warning is showing up on a 2017 MKZ 3L AWD. Warning light is on but not flashing. The dealer has had it for the third time as of now, occurring over less than  a month. The first time out they replaced coil packs and spark plugs  . Second time did a bit of "computer programing". The third time is on-going. Otherwise it runs fine, does not seem to affect performance (earlier in Dec did a road trip to AZ through TX with some very long straight stretches posted at 80 mph, it ran fine). The error code shows up on start up. I may notice a faint, really faint (not even like a bad spark plug wire on an old V8) miss early after start up if I am outside the car.  They have reset the codes and P0300 returns after driving it for maybe up to 100 miles. Total mileage on it is around 120K.  Any input would be appreciated. Just an update: service rep calls he conferred with the tec and their verdict is: The premium fuel is the issue it has a higher flash than regular fuel causing it to have a lean condition and they would need to suck the fuel out at a cost of $600 dollars and fill with regular? Now this is at a Ford dealer. My thoughts are not even printable.

I ordered an 2020 MKZ wiring diagram manual in preparation of doing some audio upgrades.  I ordered the standard manual, but I was sent the Hybrid manual.  (eBay seller was great and refunded me and told me to keep it.)  Anyway, Are there any differences in the pin diagram for the revel amp output for the standard vs the hybrid, or are they identical?

just replaced the 12 v battery and engine running rough and wont stay running did ineed to reset anything or do anything else after the battery replacement?it was fine the night before when i shut it down

I also suffered this.  My 2020, which was 5 months outside of it's OEM warranty and within the Certified Pre Owned warranty had it happen one day on the way home.  Made a horrible noise, then stopped the roof from opening.  Ford won't cover it on the Lincoln Certified preowned warranty they love to charge you so much for.  The dealer quoted me $1200 for the part (which is more than MSRP) and $2800 in labor to replace it.  I told them they were crazy.  The car has 24,000 miles on it.  Needless to say, Lincoln lost my future business.  Not that they have anything left I'd want only selling SUVs.  The worst part is that it is a well known issue among those of us who use online forums but Ford claims it never happens.  Funny never and all these people posting about it don't match up.  Cadillac, here I come.

Hello, I'm looking for a good condition 2019 or 2020. Black on black mkz hybrid with low mileage and no wrecks. Anyone?

My 2016 MKX has been in the shop since September. Something draining the battery and they could not figure out what it was. After I called the Lincoln corporate office in Michigan and filed a complaint, they finally discovered it was the TCU. But now they say the part is obsolete they cannot get a new one and they cannot use a used part because the TCU is connected to the VIN number of the car. From what I am reading on this thread it sounds like they are lying to me. Is this something they're just not going to fix because it fit into the CPO warranty rules? The car is beautiful,I want it back, I don't know what to do. It sounds like my only option is going to be to take it out of the shop and to a private mechanic and pay for the repair? Any suggestions are greatly appreciated thank you

So my panoramic roof won't close now.  The last time I tried to use it the liner wouldn't retract and got bunched up and got jammed into the track.  I was able to close it a little but now it seems like the liner is stuck.   Does anyone have any input as to how to proceed?  Does this liner get rolled up and the motor is bad?