I knew a guy in 1997 who got a new F-150, drove it 75,000, never changed the oil, and then took it to the dealer for a new one. Nice trucks.
That was a 2V 4.6. in the mid 2000’s with the 3 valve 5.4L, they were TERRIBLE. Even if you changed the oil every 2,500 miles the motor would be dead in 100K miles.
The plastic in the valve train oiling reservoirs cracks and leak down, so each start up, the cams/rockers would start with no oil and wouldn’t get oil pressure until the the cracked reservoir filled back with oil and you basically have to junk the entire motor and buy a new one for $6K.