| In fact I just spent some free time today adjusting the time and valve lash to get some more performance out of it to increase mileage even more (I use a vacuum gauge to monitor my driving...the higher the vacuum, the better the efficiency). Usually I keep it in the 15-20in/Hg range which allows maximum mileage. I find that in most vehicles I can better the EPA estimate (which, sadly, tends to be as high as 30% over the actual mileage on many vehicles). The key is avoiding jack-rabbit starts and sudden braking. |