There are 1 owner-reported engine complaints for the 2017 Lincoln Navigatorin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
problem is when you go to check the oil do you think you’re gonna find a low oil situation and what happens is the oil is actually overfilled however it’s not overfilled because you put too much oil in it. It’s overfilled because gasoline is leaking into the oil pan. So the oil is diluted and it actually doesn’t even seem like oil. It seems like dirty gas. That’s how much gas gets into it. Supposedly this is a known issue after searching it on the Internet, this is known, and it happens with this making my vehicle. The manufacturer should be responsible for fixing it. Supposedly the fix is either changing the fuel pump or fixing the valves or maybe a combination of both either way the consumer should not be stuck with this. This is a design error or defect. It says there’s also a problem with the gasket I feel I should not have to pay to get this fixed. This is a designed defect and they sold the car this way knowing afterwards that there’s an issue with it. My crank case is filled with gas when I pull the dipstick out. It drips like water. If you look at the full line on the dipstick it’s about 1 inch over the full line and the oil is virtually useless. The car also runs an idles rough and it’s constantly idling up and idling down and that’s probably because the gas is leaking into the engine. Please look into this and I appreciate anything you can do. This is definitely a Ford issue. They should be responsible there’s nothing I did to this particles this problem. I maintained my vehicles. I did everything I was supposed to do and this problem arose because it’s defect in the car quite frankly if I would’ve known it, there’s no way I would’ve bought it. I feel the public should know about this and I feel that they should be responsible to fix it. Thank you very much. I appreciate all your help in time. Please feel free to contact me if you have any questions thank you [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 25, 2026