Originally Posted by msirach
Great intro with your vehicle history. 16 per 100k!
Glad to see that you've improved that a lot.
If you haven't read it, Beating the EPA
on the home page is a good primer.
Please tell us a bit about your driving conditions such as speed limit, road conditions and what your normal commute is.
Thanks again for joining!
I'll take a look at that link later.
I live in Coimbra, where I study Management. My hometown is about 100 kms away. I usually spend the week at Coimbra and go back to Viseu in the weekend. The speed limite between these two cities is of 100 km/h and I usually drive between 90-100 km/h.
During the week I don't need the car to attend class as I live very close to the university.
50-60% percent of my driving is travelling and the rest in town. These will vary a lot... some weeks I'll do 50 kms, others I'll do 200 kms.
I only use A/C in the summer time... in winter it will be pretty rare.
I rapidly got my fuel efficiency to double... going from 16 to 8L/100 kms in about two months.
After that I tried to recover lost efficiency of my engine. My car had about 160.000 kms so I believed it couldn't be at 100% efficiency. I heard about carbon build-up and stuff...
I started trying fuel additives (injector cleaners, for example), carb cleaners, and I got a OEM replacement K&N air intake filter. I also raised the pressure on my tires. This was still with the Concerto.
I repeated everything with the Rover and went even further:
- I changed my PCV valve;
- thermostat (my thermostat was cooling in excess... in fact, so was the one in the Concerto.... only some months ago I was sure about that);
- changed rotor and distributor cap;
- new spark plugs.
Besides the air intake filter, all other changed parts are original.
To my big surprise, some weeks ago I achieved 6,02 L/100 kms over 1700 kms. With all these changes it gets easier to make a fuel tank last longer.