Your being too pedantic and making yourself sound stupid. The point being made was its not good practice to run the tank low and risk taking rubbish into the fuel system. This is clearly good advice.
No, it's clearly nonsense, as per my original post, and I know who is looking stupid here.
Fuel take-up is from the lowest practical point of a tank, otherwise you'd run out of fuel well before the tank was empty. Running a tank low makes no difference to where the fuel is taken from, you would agree? So how is the fuel magically full of rubbish when the tank is low all of a sudden? Do please explain this basic point, I'm fascinated to know.
Even with some of the back peddling you have done
I think you'll find that's sarcastically ignoring basic facts such as the above to further humour a poster who is continuing to spout nonsense, not backpedalling.
what's the point of risking a blocked fuel filter because you run the tank low?
That assumes there is actually any serious risk.
Also filters are not perfect, it doesn't take much of a bypass to cause all sorts of problems.
Agreed but these would become evident pretty quickly if the filter was faulty or installed poorly.
Originally Posted by Joss
Filters....filter stuff suprisingly. However the also have to let stuff through or it wouldn't be called a filter
Goodness me, even when they're "blocked"?
It will stop the larger stuff but not all the very very fine particles. Injector holes are very very small to help atomisation and improve burn efficiency and are easily blocked.
Right, so you've moved on and now accept there is a thing called a fuel filter, but you think it isn't good enough to actually filter the fuel to stop problems at the most vulnerable point of the system? Cracking. Excellent bit of design there eh? Or do you think perhaps, just perhaps, you're wrong on this and fuel filters are actually quite capable of stopping anything solid that would cause an injector problem? There aren't cars breaking down with injector faults all over the place after all, and there would be if you were correct.
No, injector blockage is a gradual process with multiple reasons (e.g. carbon deposits, fuel varnish deposits) and sucking up your mythical crap from the tank is not a likely one by any stretch of the imagination. It's an old wive's tale and frankly I find it stunning that people still believe it in this day and age. Running decent quality fuel and not letting a car sit undriven for weeks are far more important than acting like it's the end of the world if you run round with a less than full tank all the time.
Why not read through what other people have said You still haven't said when you are going to pop round and explain to the mrs about her imaginary blocked injector
If it's imaginary, why should I bother? You've simply come out with this guff that running a tank low caused it, with no proof whatsoever. Awfully sorry if I find an old wive's tale is insufficient evidence. Have you had the blockage analysed to see what it was? No.