Whilst I may now be filling up with bio-ethanol, I am still interested in the price of normal (95 octane) petrol for my wife’s car. And having just written 3 blog entries about the prices of things going up, I went back through the log book to see if this was true of petrol as well.

We tend to see the price of petrol as something that goes up and down, although more up than down, especially in the summer months.

Actually, it started the year at 1,239EUR/litre and finished off at 1,369EUR/litre – no question about that being a price increase then.

But in-between it reached 1,419EUR/litre (or even more, but we didn’t fill up when it did!) in May, returning to 1,289EUR/litre in August. So even if there was an overall increase, it did go back and forth during the year.

How we long for the Summer of 2003 when we first bought the car, and paid as little as 1,034EUR/litre!

Today I filled up with bio-ethanol for the first time. Germany’s first bio-ethanol petrol station is located in Bad Homburg and to operate the pump I have a coded key, which allows me to go there at any time of the day, regardless of the opening hours.

For my first visit, however, I decided to go there whilst it was open, just to make sure that there were no problems.

Actually there was a problem – a car had parked on the space in front of the bio-ethanol pump, and I had to wait about 15 minutes until it was moved.

After that I parked there myself, turned the key and filled up the car. As simple as that! Now I have a full tank and can work out for myself how much the car is using. The on-board computer says that I used 13.3litres/100km since I started driving the car, but I don’t know how many litres were in the tank when I got it so I can’t check that figure.

The first bio-ethanol petrol station in Germany,
located in Bad Homburg

With the temperature dipping to -2°C this week, I had an unexpected chance to find out how bio-ethanol reacts to the colder weather.

This is not as cold is it can get in winter here – I’ve experienced -18°C before now! But with the cold wind blowing it certainly felt different to the temperatures that we had been having the previous week.

When bio-ethanol gets cold it apparently gets sluggish. This is why there is a socket on the front of the car, so that I can attach it to the mains and warm the tank up slightly before driving off. Well, that’s the theory at least. As I don’t have an electrical socket anywhere near where I had parked the car, that wasn’t really a solution.

The alternative is to put some normal petrol into the tank during the winter. Again, the drop in temperature came so unexpected, that I hadn’t done this and had only E85 in the tank.

So I drove off anyway – and I can’t say that I noticed any difference. Perhaps the cold temperature hadn’t affected the bio-ethanol as much as I had expected? Perhaps it just wasn’t cold enough yet!

I shall be keeping a watchful eye on the thermometer and may well start mixing in some normal fuel next month.