Quote:
Originally Posted by gIzzE
Don't be fooled into swapping for a derv if you do lots of sub 10 mile journeys, the petrol actually does a bit better on those type of runs, well certainly in winter with colder temps and winter diesel.
I have had so many of the same car with the petrol and diesel engine in, and every time the petrol has done slightly better on the 6 mile school run. Not by much, but no cost savings.
Remember these are set up for 98 ron as well, so all official figures are based on your running 98/99. Put 95 in and it will be fine, but you will lose power and MPG as well.
My 335i was really noticeable on 95 ron, lost all its pep and MPG went from 27 average to around 24 average every single time.
Annoyingly a 1/4 tank of 95 will retard the timing but it can take 2-3 tanks for it to get back where it should be.
I actually rolling roaded mine on 98 and again on 95 and it was a drop of nearly 30hp.
Evolve did the same test and posted figures on here back in the day too and they found the same.
Also, are you sure that 90-105ºc is not oil temp?
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Yeah it was oil temp, my bad.