reg. or synthetic oil
 

i just bought a 93 rx7 and want to know what oil to use.
i hear gifferent things... don't use synthetic it's not good for the rotary , then i hear use synthetic it is good for a rotory motor.
could i get some feedback of pros and cons of both.
i use synthetic in my motorcycle ( gsxr 1100 ) and it works fine but piston motor of course

Oh no....

did i ask the wrong question?