Running in a diesel

Discussion in 'Motorhome Chat' started by birdvan, May 11, 2009.

  1. birdvan


    Apr 30, 2009
    Hi all have bought a secondhand van (Duetto) that has only done 1400 miles and not certain how to drive it, used to petrol engines. It has a ford 2.4 140 ps engine. The ford handbook says not too fast and do not labour engine, not over detailed. The rev counter has a green band 1500 to 3000 revs, which seems to suggest keep engine in this rev band. It seems happy at 1500 revs and presume this would provide best economy, any comments welcome.

    All best Birdvan
  2. Geo

    Geo Trader - Funster

    Jul 29, 2007
    Drive it as you would any vehicle, this day and age running in is almost unheard of,Vehicles today are ready to perform straight out of the box, the engineering tolerances are far greater than they ever were, In laymans terms the engines are to day built half worn out, thats how they get good MPG, (please dont take that comment too literally)
    Don't molly coddle the engine or you will never get it to perform to is best
    simply dont thrash it and dont labour it, drive normally.
    MPG figures will slightly improve as things settle in:thumb:
    Regards Geo
  3. 45eEver


    Apr 15, 2009
    1500 to 3000 revs is the most economical operating range for a your engine.

    Medium and heavy acceleration below 1500 revs, except in first gear, is labouring your engine.

    It makes little no difference to the amount of fuel you use if you are in 2nd or 3rd at 20 mph.
    However, your engine is probably a smidgen happier between 2 and 3000 revs because the water and oil pumps, and alternator are working efficiently.

    If I'm slowing down, I reckon to change from 5 to 4 at 40 mph.
    4 to 3 at 30mph.
    3 to 2 at about 20mph
    I change 2 to 3 at 30 mph when accelerating, eyc.

    I drive that way to get better engine braking, which helps me keep below the speed limit, which helps me cheat the Gov out of tax.
    Diesels are not noted for their engine braking.

    I'm happy to cheat the gov out of Fuel Tax at the same time.
  4. pappajohn

    pappajohn Funster Life Member

    Aug 26, 2007
    YO11 2BD
    my pickup handbook, from new, stated.... dont over-rev or labour the engine for the first 500miles.....use the gearbox as well, it will appreciate a bit of good driving everywhere in 4th and 5th...1st,2nd and 3rd will get jealous.::bigsmile:

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