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Fact or fiction? (Fuel pick-up related)

  • 22-04-2013 8:38am
    #1
    T-Maxx
    Registered Users, Registered Users 2 Posts: 3,209 ✭✭✭


    Is there any truth at all in this business of not letting the fuel level drop too low for fear of dirt and contaminants entering the system?

    1. Fuel slosh around in the tank so it mixes up pretty well.
    2. When the vehicle has been parked up for a few hours any dirt will settle down to the bottom of the tank.
    3. Fuel filters.
    4. Fuel intake is not completely the bottom of the tank.
    5. I'd like to believe that fuel from reputable fillings stations is fairly clean already, and with proper care when re-fueling it should stay that way.

    I've never paid any attention to this and I've never had any associated issues.


Comments

  • #2
    [Deleted User]
    Posts: 23,339 ✭✭✭✭ [Deleted User]


    T-Maxx wrote: »
    ............... I'd like to believe that fuel from reputable fillings stations is fairly clean already, and with proper care when re-fueling it should stay that way.
    .........................

    It is fairly clean, but fuel filters are known to get full of crud :)


  • #3
    H3llR4iser
    Registered Users, Registered Users 2 Posts: 4,028 ✭✭✭H3llR4iser


    Rubbish, most if not all relatively modern cars have the pickup tube in the lowest part of the tank, so they pick up every single drop of petrol - anything that would deposit at the bottom of the tank, will be picked up regardless if the tank has 50 or 0.5 liters in it. Most of the dirt gets picked up by the filter(s), which are there for a reason.

    There could be a little case about the pump cooling/lubrication, however.


  • #4
    Matt Simis
    Registered Users, Registered Users 2 Posts: 8,718 ✭✭✭Matt Simis


    H3llR4iser wrote: »
    Rubbish, most if not all relatively modern cars have the pickup tube in the lowest part of the tank, so they pick up every single drop of petrol - anything that would deposit at the bottom of the tank, will be picked up regardless if the tank has 50 or 0.5 liters in it. Most of the dirt gets picked up by the filter(s), which are there for a reason.

    There could be a little case about the pump cooling/lubrication, however.

    Exactly, its a real old school line of thought which clearly doesnt make sense if you look at any car's pump and placement.
    Fuel Pumps also have a pre-screen filter over their own pickup which filters out big contaminants while also lowering the pickup point right to the bottom.


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