If you hold a Single Engine rating (ASEL) it is not necessary to use a Multi Engine aircraft for the Flight Review
a. Type of Equipment Flown.
(1) Section 61.56(c)(1) states that to act as a PIC, a pilot must accomplish a flight review in an aircraft for which that pilot is rated. A pilot might hold multiple ratings. In such case, the pilot may take a flight review in any one of the aircraft for which he or she holds a rating or operating privilege and they will have met the regulatory requirement for all aircraft for which they hold a certificate and or rating.