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# Ethanol Alcohol and its Effects on Gasoline (page 2)

based on 8 ratings
Author: Robert S.

### Hypothesis

Hypothesis: My hypothesis for this experiment is that adding higher levels of ethanol alcohol to gasoline, will not improve the run time of a motor.

### Experimental Procedure

1. Carefully add 50 milliliters of 87 octane gasoline blended with 10% ethanol alcohol to the empty fuel tank of the motor and measure how long the motor runs for.
2. Remove any remaining fuel from the fuel tank.
3. Repeat step 1and 2 for 89 and 93 octane gasoline blended with 10% ethanol alcohol.
4. In a metric unit measuring container blend 45 milliliters of 87 octane gasoline commercially pre-blended with 10% ethanol alcohol, and 5 milliliters of 100% pure ethanol alcohol. This makes the mixture 20% pure ethanol alcohol and 80% gasoline.
5. With your 20% pure ethanol alcohol and 80% gasoline mixture pour into the empty fuel tank and measure how long the motor runs for.
6. Remove any remaining fuel from the fuel tank.
7. Repeat steps 5-6 for 89 and 93 octane gasoline commercially pre-blended with 10% ethanol alcohol.
8. In a metric unit measuring container blend 40 milliliters of 87 octane gasoline commercially pre- blended with 10% ethanol alcohol, and 10milliliters of 100% pure ethanol alcohol. This makes the mixture 30% ethanol alcohol and 70% gasoline.
9. Remove any remaining fuel from the fuel tank.
10. Repeat steps 8-9 for 89 and 93 octane gasoline commercially pre-blended with 10% ethanol alcohol.
11. In a metric unit measuring container blend 35 milliliters of 87 octane gasoline commercially pre- blended with 10% ethanol alcohol, and 15 milliliters of 100% pure ethanol alcohol. This makes the mixture 40% ethanol alcohol and 60% gasoline.
12. Remove any remaining fuel from the fuel tank.
13. Repeat steps 12 and 13 for 89 and 93 octane gasoline commercially pre- blended with 10% ethanol alcohol.
14. In a metric unit measuring container blend 30 milliliters of 87 octane gasoline commercially pre- blended with 10% ethanol alcohol, and 20 millimeters of 100% pure ethanol alcohol. This makes the mixture 50% ethanol alcohol and 50% gasoline.
15. Remove any remaining fuel from the fuel tank.
16. Repeat steps 12 and 13 for 89 and 93 octane gasoline commercially pre- blended with 10% ethanol alcohol.

### Results

 87 Octane % alcohol Trial 1 Trial 2 Trial 3 Trial 4 Trial 5 Average 10 212 211 209 208 211 210.2 20 219 195 99 117 176 161 30 201 146 237 0 0 116.8 40 0 0 0 0 0 0 50 0 0 0 0 0 0 89 Octane % alcohol Trial 1 Trial 2 Trial 3 Trial 4 Trial 5 Average 10 211 233 179 227 195 209 20 240 229 183 217 227 219 30 155 173 209 187 232 191 40 168 133 164 182 153 160 50 0 0 0 0 0 0 93 Octane % alcohol Trial 1 Trial 2 Trial 3 Trial 4 Trial 5 Average 10 237 211 232 234 212 225.2 20 232 244 192 213 168 209.8 30 142 237 151 145 150 165 40 0 0 0 0 0 0 50 0 0 0 0 0 0

*Units are in seconds

 87 89 93 10 210.2 209 225.2 20 161 219 209.8 30 116.8 191 165 40 0 160 0 50 0 0 0