Hi Pro Pattern,
I have the 145AAR and a friend is running the 160AAR with 15% cool power.... (Both will fly a Revolution Pro [a large pattern airplane and 10.5lbs) through the Masters pattern with plenty of vertical (and yes the 160 has more ooomph than the 145) You shouldn't need any more lube and the power is fantastic. Good advice from these guys....save your money

enjoy the Webra.
Chris