09-14-2012, 08:09 AM
So sorry you are having this problem. In my case, I ran twin 2 cycle 6-71 Detroits for many years. Delo sells a special 40w oil designed especially for 2 cycle Detroits, and that is Delo 100, not 400.
2001 Newell #579
tow a Honda Odyssey
fun car: 1935 Mercedes 500K replica