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artist_birch

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Posts posted by artist_birch

  1. hey artist birch. you mean you use petron xcs on your l200 diesel? hm.....

     

    by the way, i tried to make a comparisson of just the petron xcs and the petron extra unleaded on my car. seems the extra unleaded works better. the engine runs smoother

     

    The L200 runs on any diesel I could find. The diesel additive from seaoil seems to work well. I have to do more testing though. Petron extra unleaded and shell unleaded do not seem to have a difference on my other car. ;)

  2. The new small cars are pretty practical IMHO. The jazz and swift top my list. I have heard some bad stuff about the piccanto so I wouldn't recommend it. I haven't heard much about the Getz though. These days, a small low displacement car is the way to go. You not only save fuel but also space on the roads.

     

    If you tend to carry a lot of stuff, the Hilux looks pretty good for a pickup.

  3. There are some good tips here. I do however want to add some info regarding fuel saving on electronically controlled injected petrol engines.

     

    1) Downshift when you slow down.

     

    That seems counter intuitive right? EFI engines cut off fuel when coasting from above around 1500 RPMS. Google it and you will find this information to be true. As long as you are coasting down from above 1500 RPMS you are not consuming any fuel at all.

     

    2) When faced with a clear road ahead, accelerate quickly while short shifting.

     

    It's true that when you press the gas pedal harder you burn more fuel. So what's the point to this tip?

     

    It's all about volumetric efficiency. Basically because an engine has the least pumping losses when it is unthrottled, or when the air coming in does not have to pass through a small restricted space like a partly throttled car. This is one of the reasons why diesels are so fuel efficient. In a diesel engine, air flows in freely, and power is controled by fuel flow.

     

    What you want to do is accelerate without tipping off the wide open throttle response from your throttle position switch/sensor. This means accelerate to your cruising speed at around 3/4 throttle while shifting at around 2000-2500rpms.

     

    Of course this only works when given a clear stretch of road. For example when you are leaving the toll gates of NLEX.

     

    3) Keep revs down when accelerating.

     

    Frictional losses in the engine rises exponentially. Roughly square that of the rise in RPMs. So if your RPMs triple, frictional losses get nine times higher. When you are accelerating, this is not a good thing.

     

    4) Cruising speeds depend on your car. Slower is not always better.

     

    Usually the most frugal cruising speed is around 70-80kph. Some cars will have it higher. Experiment with your cruising speeds. It's all a matter of drag.

     

     

    By using these tips I brought my fuel consumption from 6kms/L to around 7.8kms/L. Again this will only work on EFI engines. I do not recommend this on carburetted or diesel engines with mechanical injection.

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