Re: Letting your Car's fuel tank run empty? Drop the habit! I always fill up completely and run it down to within the last 0.5 litre. It's a bit of game. My wife hates it. If you know your car reasonable well, it's easy to do.
With modern fuel, residuals are minimal, and all fuel systems have filters. Running the tank empty and thus stalling the engine, is embarrassing, but not necessarily a big deal. Make sure you know what to do, and whether your fuel system needs priming or de-airing after the tank has run dry. By and large petrol engines will self prime, but on diesels you often need to prime manually.
Also, starting endless to try and prime the system might have some wear and tear on the high pressure pump. It's the petrol/diesel itself that provides lubrication for the plungers. No fuel, no lubrication. Hence, make sure what the procedure is for you car.
Petrol can and does go stale. Modern Petrol with ethanol are particularly prone to quality degradation if left for long periods. Having said that, I've only experienced it once. Currently I have three cars in storage in the Netherlands that get very little usage. I drove all three of them during a recent visit to my home country. One of them hadn't been driven for more than a year. Fired up fine, nothing wrong with the petrol.
On the other hand, my little power lawn mower in the US, would refuse to start on fuel older than 6-7 weeks consistently. Only way to get it going was to clean out the carburetor and put fresh fuel in.
If your car isn't going to be used for an extended period of time, most would advise to fill your tank to the brim. Reason is that with the tank full, there is less room for air and potential condensation occurring. So I always fill up my cars before they go back in storage.
Jeroen |