I'm new to this group but have used 'Lists' for years.
I'm just about to receive a brand new 2l diesel C-Max in Ghia trim,
courtesy of the Motability scheme.
(Sorry chaps, you can stop dribbling now!:-)
I've seen various options for run-in regimes, with some recommending
the 'drive it hard' school and most intending to optimise upper
cylinder seal during the first 500 - 1000 miles of life by occasional
Can you add to this debate?
Mr Ford etc will swear that it should be driven gently. never reving
anywhere near the limit until it's done at least the first thou'...
I think you will find Mr Ford will say "Avoid driving too briskly during the
first 1,000 miles. Vary the speed frequently and avoid labouring the
engine. If possible avoid full use of the brakes for the first 100 miles in
town, and for the first 1,000 miles on motorways. From 1,000 miles onward
gradually increase performance up to the maximum." Or something along those
As you correctly say its importnant to create some highist cylinder
pressures to encourage ring to wall contact to bed in. Otherwise glazing can
(and does) result and oil consumption, and poor running manifests..
Its important to allow the engine to warm up fully before putting it under
high load, and equalliy, if not more important not to labour it, especially
during its early days. This means changing down abit more than you might
otherwise do. I would aim for 1500+rpm at all times during the first
2000miles or so. Running light should also be avoided especially at constant
If it were my car, it would be receiving 80% of full power through the gears
to a self imposed rev limit of 3000rpm for the first immediately for the
first 500 miles 3or4 times per trip, and progressively further towards the
red line thereafter upto 1500miles, and driving normally after that.
You must check the oil level very frequently to begin with until you
establish how much its using, which could well be upwards of 2 litres in the
first 1000miles. If its bedding in properly, this should start reducing
Hope this helps.
I'm looking forward to getting the vehicle in about 3 weeks, at present
all I have is a (new) chassis number, although it should actually get
built sometime this week. That'll be where the trouble starts! :-)
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