Hi Folks,
I'm here to collect further ways how to reduce the fuel consumption of my old diesel Volvo.
Let me tell our story
I bought him - his name is Bordeaux - in 2007. Our first way was a 240km long highway trip. I didn't know that this type of engine doesn't like high speed (above 68mph) - but I was calm,because I believed in the water temperature indicator which was wrong. So we run on 75mph. Fortunately he was OK at the end of the trip and made 36,2mpg (US).
I was really happy with it according his size and weight.
I totally rebuilt its engine with Mahle pistons and quality parts. So he has a baby heart with an oldman body
I monthly drive him for a 280km long trip without highway on a speed of 50-53mph. I always achieve 45,2mpg (5,2l/100km). The only modifications are that his got a direct air filter, I fitted a brand new radiator so I can cover partly the grill block without trouble. Oh, yes and I adjusted a PCV jar. I generally pump the tyres onto 36psi.
So after it my aim was to achieve 48mpg (4,9l/100km) without pulse and glide driving style.
It was time for an engine oil changing so I turned to 10w40 Liqui Moly oil from the regularly used 15w40 one.
.... My mpg increased to the unbelievable 51,1mpg (4,6l/100km).
Our average city mpg is about 34 with using 'man-powered start-stop system'.
))
I love this result but I want to improve it with mods on my car.
In the first steps I don't want to modify his shape with spoilers or so on.
Do you have any ideas? I found an interesting youtube vid about engine head porting.
Thanks inadvance for your help!
Doni_99