A few weeks ago the scenic went to the mechanic for a regular 15000km (9300 miles) maintenance. Since then, the consumption when coasting in neutral is lower than before.
- Before maintenance the consumption was at 1.4L/100 (168mpg) when coasting in neutral at 60km/h, ie 0.84L/h = 0.22GPH.
- Since maintenance it's at 1.2L/100 (196mpg), ie 0.72L/h = 0.19GPH.
As the consumption is shown with +/- 0.1L/100, this is at least a 8% saving when coasting in neutral...
(my cars aren't SG2 compatible and the scenic doesn't show the instantaneous consumption under 35km/h (22mph))
From car's manual, any *w40 oil is OK from 0w40 and up. The mechanic uses 10w40 by default and was very astonished that I was asking for 0/5w oil. He didn't had any 0w oil.
I find that improvement too big for a simple maintenance and I think the oil change from 10w40 to 5w40 and the air filter change aren't the only reason to such a big change. Not the lower temperature, nor the higher humidity are helping FE.
What is your experience ?
Denis.