It's not the amount of fuel used per unit time, but the amount of fuel in the motor at any given time.

Say an engine is running at 60 RPM, firing once per second.

Every second, there is 1 cc of fuel pumped into it. At any given time, there is 1 cc of fuel in the motor. That is all the fuel required to keep it turning at that rate.

Now say the engine (this is just for simplicity's sake) needs .5cc of oil at any given time. .5cc of fuel, .5cc of oil.

The .5cc of oil must be maintained both in glow and diesel.

However, you need much more methanol than you do diesel to keep the engine running.

Now lets say the engine only needs .25cc of diesel to run at 60 rpm, but it still needs the same amount of oil, .5cc

In simpler terms, the same amount of oil is needed at all times in the engine, but not necessarily the same amount of fuel, due to the higher calorific value of diesel.

It's percent taken literally. Per 100, or per whole.





My values are ridiculous for a reason: I'm tired, but they still work.