Introduced in 2015 on the Xtrainer model, the oil injection system met Beta’s requirements as far as performance and durability, hence its decision to apply this design to the 250 and 300 RR models. Basically, there’s an oil tank located under the seat in the airbox that accepts 650cc premix oil (the very same stuff you currently use to mix your fuel, although Beta strongly recommends going with the highest quality oil you can find). Filling this tank full of oil will reportedly last for several tanks of straight gasoline that go through the bike via the fuel tank (of course, the mileage you get will depend upon the rider and the conditions). The way the system works is that oil is drawn from the under-seat tank and then fed through the oil injection system as required by the engine’s revs and load, both of which are measured by a Throttle Position System (TPS). In other words, the computer knows exactly how much oil to draw depending on where the throttle is at in order to provide a theoretically perfect fuel-oil mix. Other benefits include the fact that riders no longer have to pre-mix fuel, as well as the claim that 50% of the smoke from the exhaust is reduced. Just to clarify, this is NOT a fuel injection system; there’s still a Keihin PXK 36mm carburetor that feeds the cylinder. You still have to tune the jetting of this bike, but you no longer have to mix oil into the fuel. The Electronic Oil Injection System basically only takes care of lubrication and measuring how much oil is truly required at various RPM. To alert the rider of a low oil level, the instrument cluster has been updated and includes oil injection system diagnostic lights.