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Correct Fuel Mixture?

19690 Views 5 Replies 6 Participants Last post by  wik
I just bought a 93 RM 125 and need to know what the proper oil to fuel ratio is. Also, what type of 2 cycle oil and what octane gas are supposed to be used?
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Ratio can be anything from about 20/1 to 40/1 usually recommend middle ground 30/1. Depends on how you ride the bike, flat out crazy riding for long periods go with the higher ratio ( more oil ), relaxed backcountry cruising go for lower ratio ( less oil ).

If everything in the engine is ok and it still smokes a lot reduce the oil.
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