Peugeot 308: Modification : Estimating the ethanol content

1. Presentation

The purpose of this document is to indicate the procedure to be followed to calculate the ethanol content in the fuel tank.

2. Drawing a sample of fuel

Draw a 50 ml sample of fuel from the fuel tank.

Pour the sampled fuel into a 100 ml measuring cylinder.

3. Water / fuel mixture

Fill the measuring cylinder with 50 ml of water to reach precisely 100 ml.

The mixture separates into 2 volumes : The quantity of fluid "A" which rises to the surface is pure unleaded petrol present in the initial sample.

4. Estimating the ethanol content

"A" = 9 ml.

N.B. : Formula for calculating the ethanol content : Percentage of ethanol = (50 - "A") / 50 X 100.

Calculation :

• Measure the quantity of fuel "A"
• Subtract the quantity of fuel "A" from 50
• Divide the result by 50 then multiply by 100

Example :

• "A" = 9 ml of pure unleaded petrol
• Ethanol content present in the initial mixture = (50 - 9) / 50 X 100 = 82 %

Precautions to be taken : Packing traction batteriesTightening torques : Exhaust line