what oil tp mix

[jrod35]

i have a 98 sportster with an sbt motor which
i am very pleased with but finished breakin and would like to know if the rotax oil that was in the injection sys is the oil i should use to pre mix with gas if not what oil . thank for your help and thanks for the motor .

john

[Bryan Glynn]

Yes use the same oil at 40:1.

[jrod35]

thanks so much