Barry, I don't know. The guys in the Club Saito forum are dissing high nitro mixes. They're saying 4 strokes work fine down to 5% nitro. I got 2 gals of Wildcat 35% nitro--thinking I might get better performance and fuel efficiency, but the guru, Bill Robison, says 4 strokes drink high nitro FASTER than low.

I'm running 15% Wildcat in my Saitos and they start, easily, in weather down to 30 degrees (a little lighter fluid in the line helps when the temps get really low). And I'm getting dependable 17 minute flights on my 11oz tank now, after I installed the Saito velocity stack and Bru-line filter. Before I was getting just 13 safe minutes with the 11 oz tank.

The big advantage of the velocity stack (sold through Horizon, $6.75) is that my firewall is now clean, no more spillage and blow back from the carb mouth--which was HORRENDOUS, covering the plane, before the velocity stack. I had to lean out BOTH ends of the Saito. And for the first time, she idles down to 2000 rpm (13 x 5 prop).

J.