RE: Fuel for old engines
No, he's right, the engine will demand the same amount of METHANOL, irrespective of oil content. If you increase the oil content you'll need to increase the NV setting so that the amount of methanol is the same, as you now have to haul more oil along with it.
Think about it.
Also, there was a test in the 70's on 250cc motorbike motors that found that increasing the oil content acutally increased RPM, not decreased it.