Hi,
I have had a Avensis auto now for about 10 months,it had about 13,000 on the clock then.
Its now got about 26,000 on the clock and I've noticed over the last few weeks a quite considerable increase in go in it,almost if a fault had suddenly cleared!
I thought running in/loosening up periods were a thing of the past now?
Phil.
|
Perhaps the colder weather. Or if the previous owner never ventured above 2000rpm, maybe it's just had a 'delayed' running in ;-)
The need to actually "run in" modern engines is largely unnecessary these days - what you should do from day one is use a wide range of engine speeds without labouring the engine, or sticking at the same speed over long periods for the first 1-2k miles.
If you mimse along in your brand new car at 45mph everywhere then it may affect the longevity/performance of the engine.
Edited by Lygonos on 26/11/2009 at 14:03
|
|
|
Well done Phil.
You've found the h a n d b r a k e then?
;-)
|
Well Well,
Thats wot that sticks for....silly me
|
I only have personal experience of Ford diesels, but I'm certain my last Focus ran better at 40/50k miles than it did at 10/20k.
In fact, it never ran better than when I sold it at 80k.
|
|
My experience of several diesel cars is that they are not at their best until about 20,000 miles, and the engines improve with age given regular servicing.
|
When I put my Avensis diesel in for a 20k service, they said that the engine mngt system would be updated, and this would improve performance of the car.
It did make it go a bit nippier, but at the cost of fuel consumption - dropped from avg 48 to 45.
|
Morning all,
Thanks for your comments,this is the 1.8VVti engine I have,it averages about 36mpg,not bad for a petrol auto,and it has stayed the same during this really noticeable improvement in performance!
Maybe its a sign of impending high oil consumption which seems to be fairly common with these engines....
Cheers
Phil.
|
As lygonos said, it's the colder, damper weather.
In this kind of weather you get more oxygen per cubic metre of air, the more oxygen you get into the cylinders the bigger the bang from the fuel, and ultimately more power.
|
|
|
|
|
For several years I've religiously plotted graphs of my car's monthly average fuel consumption and the trend has always been for the economy to be worse in winter than in summer. I put this trend down to the facts that (a) the fuel enrichment system will be in operation for longer in winter, and (b) friction will tend to be higher until all the oils have reached their running temperature, and until clearances in running parts have reached their warmed-up norm.
Edited by L'escargot on 27/11/2009 at 09:36
|
|
and (c) more drain on the alternator running lights, heater, heated rear window, a/c, wipers, etc.
|
|
|
|
