Motorcycle Repair: dt100, stroke oil, oil tank

Question
what type of gas does an old dt100 yanaha take, mixed or straight.

Answer
Hi Don,

The stock DT100 had an autolube oil pump injection system.  

Gasoline was added to the fuel tank and two-stroke oil was added to the oil tank. Pre-mixing was not necessary unless the system was disabled.

Respectfully,
Mark Shively