No, no, no, the ST2300 is not the same as the 2000. The 2000 was the first popular, big glow engine at 20ccs or 1.2 cu in. The 2500 was in the same crankcase, but has 2500 stamped on the lug, as I recall.

These engines, as well as the 3000 & 3250, use a low oil fuel, 12%-14%. With regular model fuel, they don''t idle as well or produce max power. They will run. Morgan Fuels sells (or they used to) Super-T fuel in both Omega and Cool power. This was a low oil fuel that ran very well in these engines.

The 2000 and 2500 both turned up fairly well, whereas the 3000 and 3250 got their max hp at 7900 rpm. The larger 2 engines need to be propped for about 7200 on the ground. As I recall, a 16-6 or 16-8 was a good prop for the 2000.

The 2300 is a completely different, and newer, design that uses regular model fuel, 17%-20% oil.