Lincoln MKT Owner's Manual page 309

For EcoBoost™ equipped vehicles: When servicing the air cleaner, it is
important that no foreign material enter the air induction system. The
engine and turbocharger are susceptible to damage from even small
particles.
Refer to Scheduled Maintenance for the appropriate intervals for
changing the air filter element.
Note: Failure to use the correct air filter element may result in severe
engine damage. The customer warranty may be void for any damage to
the engine if the correct air filter element is not used.
Changing the air filter element
2013 MKT (mkt)
Owners Guide gf, 1st Printing
USA (fus)
Maintenance
3.7L V6/2.0L EcoBoost™ engine
3.5L V6 EcoBoost™ engine
309