TEST SUBJECT:
I drive a Year-2004 Wira 1.5GLi Sedan with Siemens-VDO ECU, mileage clocks 24,000 km.
EXPERIMENTAL:
100 ml of acetone (99.9% purity) purchased from our chemical supplier was added into a tank-full of Caltex Vortex Gold, presumably slightly over 50L.
So the percentage is 0.2% or about 2ml/L, slightly lower than 2.34ml/L as in statement 4, but still well within the optimum range in the graph.
OBSERVATION:
Before the test, i managed to get about 0.08 - 0.09L/km, 80% town drive on daily routine. My wife uses about 50% of the mileage. So it's kinda mix driving style and traffic condition. However, our daily routines do not vary much. Same route same time same traffic condition to work, to get homed, to dine.. yes, darn boring. Once a while we do go out for TT thus the 20% of highway drive.
OK, with this tank, I must admit that i drove a little bit more aggresive. However, i have installed a manifold vacuum gauge and it seldomly reads lower than 5 inHg below atmosphere (that's about full throttle). I didn't feel that the car is more powerful, nor more responsive, nor smoother idling, nor less exhaust odor.
RESULTS:
I ran for exactly 222.1km and the gauge points the middle. I went back to the same station, same pump at almost the same time (i always top my tank at around 8pm before i go for dinner). The fuel pump reads 22.366L or RM34.
So, i used 22.37L for 222km, it works out to be 0.10L/km.
CONCLUSION:
From the calculation that show an increase in the FC, and considering that i drove a lil' bit more aggresive, just a little. Adding 0.2% of acetone into my regular fuel DID NOT help in reducing the FC.
FURTHER STUDY:
Could it be too high (if statement 4 and the graph are false)? Since the concentration is now diluted to about 0.11% v/v, we will see. I will top the tank at the same station, same pump, same time. Keep the driving style as the first tank, use the same road, remains my boring daily routine, and most importantly - DO NOTHING TO MY CAR, except toping the fuel.
Again, we'll see.