All your thought sharing is much appreciated!
I bought a used engine and not sure if is the 185 zero( came in a zero box but manual was was for a ys 185DZ. Anything on the outside of engine to confirm you know of? Running nitro in a zero engine would not be good, right? If it is a zero, does Klotz oil have any blends of oil that are good for a fai blend?
Thanks for your help,
Marty