In your scenario, a 152 one year newer than a 150, same equipment, same price,
the 150 will be in better condition and/or have lower total hours than the 152.
152s just command a premium price. So take your choice. Pay more and get a
"better" engine or pay less and use the money to overhaul the O-200 sooner than
the O-235. By the way, neither engine is likely to make it to TBO given the low
hours that most owners actually fly. Engines that sit just don't usually make
it to TBO.

Best regards,

Steve Robertson
N4732J 1967 Beechcraft Musketeer

Marty from Sunny Florida wrote:

From what I've read on this NG, the Lycoming engine is a better choice in
terms of hours to Major Overhaul. A Continental engine with Millenium
cylinders makes the engine less likely to fail. All things equal, including
the price, what is considered a better buy, the 150 or 152? Presume they're
one model year apart and equally equipped.

Advice and opinions, please.

Marty