Aw you must be really short on multi-time if you're gonna log your sim time as that. It's easy if you're in a JAR-FCL country.
There are new logbooks out that comply with JAR-FCL logging requirements (I suggest you get one, even Jeppesen has a nice one). Under JAR-FCL, there's a special column called 'synthetic training devices'. Just three items are logged: date, type of aircraft, sim time. Not even landings (loggable in Level D) or approaches are logged.
So sim time the old fasioned way cannot be logged as turbine, jet, multi or simulated IFR. But really, how much time do you spend in a Level C or D simulator? Spent 60 hours in there for my 757 initial training, but still, 60 hours of multi-engine is not really that impressive or useful.
As PNF, I don't log the approaches.
But that's just my thinking