WHICH PUMP GAS TO GET FOR A RM250>

[CWDHUNTER]

What common pump gas should I use in a rm250 using 40-1 spectro....thanks.

 

[YFZRob]

Are you asking for a brand or octane? I use 93 here in FL from Amoco/BP or Mobil, and I have never had even a hint of detonation, even with a leaner main jet than stock.

 

[CWDHUNTER]

both....should i stay away from ethanal?

 

[Rich Rohrich]

both....should i stay away from ethanal?

If you have the option, avoiding fuels containing ethanol is a very good idea.