I just bought another FD and the person who owned it before me was using redline synthetic oil in it. I always heard that synthetic should not be used in rotaries .....is this true and should i convert back to regular motor oil or is synthetic ok...... i would greatly appreciate the help if anyone can make some suggestions

 

Short answer: Search
Slightly longer answer: Synth is fine.

 

Synth oil is fine i use amsoil and i have no problems

 

mostly depends on how often you change it and your weather conditions

 

please try the search option before making a topic.