Is running on low fuel bad for your car?

I have read in a number of places that is a bad idea to run a diesel car on low fuel. Apparently you should never let it go below 1/4 of a tank. Is this correct? And if so, why?

Asked on 21 September 2016 by Doug Isaacs

Answered by Honest John

So that junk, detritus, emulsified fuel, water and even petrol normally floating on top of the diesel do not reach the fuel pick-up and destroy the high pressure fuel injection pump.

Tags: diesel engines technical issues

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