woah, the thread is still here [8D]

I just tested a ST gs40 on 5:1 E85 and Castor (sounds like a 16% oil plan).
Stage1 of the tests was to mix E85 with some oils, and see what stayed and what separated,
castor stayed but ElectroluxPoulanWeedie 2stk didnt, and wesson oil from the kitchen didnt
It was a new engine, with a few tanks of regular break-in on glow.
The E85Castor started right up, and ran unpowered-glowplug while we tweeked the needle,
but at WOT it heated up after a min, got surgey, and shut down.
(had 'smoke' the whole time, the laymans 'not too lean' indicator)

After a cooling, we tried again with less throttle, and richer.
We tuned it off the 14k (10x6MAS) down to 11k+, and it ran surgey.
We the throttled it down to about 2/3 open, and was still 10k-11k.
Idle was smooth as glass, nice & low, but not superlow.
Transition was... well, it wasnt.
It came off idle and surged around 8k, then eventually got back up to 11k after like 30 seconds

We are guessing the rpm was changing as the engine temp changed... just wild guess though



So
How do I know if I was firing the un-lit-glow off E85, or was dieseling after the lit-glow start?
How can I cool this down... more oil? Less prop? Run it only in the winter?




Note/warning:
Seems even the e85 diluted some,
the gasoline in the E85 did attack my fuel syringe black piston.