Oil demand or need is similar to any other system on a engine (ignition timing, air fuel mix, cooling, etc) and will vary based on speed, load, temperature, (etc). So unless someone is going all out with a complex CPU so folks can chip-tune like they do with automobiles, then everything is a compromise. With the ideal being digital injection would be superior to mechanically mapped pumps, which are superior to just the basic fixed flow pumps, which is superior to premix. Failure of being able to deliver would be the weakness of any of those systems. Premix being the only one where component failure would be the person refueling not mixing the correct ratio (or using shyty oil) - the common flaw on all of them is forgetting entirely to add oil (to the fuel or to the tank).
I suppose one day I will become old and feeble and forget more and more and one day I might forget to premix and will start locking engines. I have run out of fuel on a number of occasions (most everyone has done this more than once, anyone who says they never has is likely not telling the truth), but at least locking a engine will not be because I forgot to fill the oil tank.
> Born to be WillD Wrote:
> It got discussed here^
> I was pondering whether the oil demand would be more closely related to
> amount of friction, thus dpenedent on the RPM of the engine, or number
> of cycles wiping the piston against the walls (like each revolution
> needs a set amount of relubrication) or if instead it there was a heat
> effect, more gas being burnt = more heat = more oil demand? or if there
> was a washing effect of the gas on the walls, in which case more gas in
> meant more oil need; demand again related to amount of gas going in.
> Essentially asking whether the amount of oil supplied should better be
> proportional to engine speed (injector), or to amount of gasoline
> no consensus. but in general my takeaway was that a GOOD oil injector is
> superior to premix, such as that yamaha system or high end 2 stroke
> scooters or full 2t motorcycles. Meanwhile moped injectors are NOT
> "good" oil injectors, and best avoided.