Nice wagon and drag there BD :wink:
As for fuel, I fill up, run until 50 miles to go and repeat...
As for fuel, I fill up, run until 50 miles to go and repeat...
Anyone actually "filling up"?
- Thread starter It's a fair cop...
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Err ...... umm, I'm not sure most here will be too worried about 108F summers or, for that matter, -33F winters. Indeed, I believe that most on this forum will have petrol engines, unless they've modded their Z4 somewhat, so waxing of the fuel shouldn't be a major concern nor freezing of the negligible condensation that may form in the fuel tank from the ingested air.bigdog said:Garvin said:
Easy. In a life a long time ago in a galaxy far far away called South Dakota. We would have wild swings in temperature. 108F summer down to -33F winter. This could play havoc if one didn't keep the tank full during winter. I even mounted a 35,000BTU aux kerosene heater to preheat the fuel and coolant in my FedEx lorry. At -20F #2 diesel turns nearly solid. Any condensation in a petrol or diesel system will freeze in short order. So, 1.3 million miles later over the course of ten yrs. I've seen & learned a lot of trivial BS stuff.lay:
Regarding the other comments on evaporation, well most systems are pretty much closed so any signifcant evaporation will take years and I'm not sure modern fuels will crystallise out solids (deposits) even if significant evaporation did occur.
I think most can sleep easy about any problems with their fuel, whether the tank is full or not.
Garvin said:Err ...... umm, I'm not sure most here will be too worried about 108F summers or, for that matter, -33F winters. Indeed, I believe that most on this forum will have petrol engines, unless they've modded their Z4 somewhat, so waxing of the fuel shouldn't be a major concern nor freezing of the negligible condensation that may form in the fuel tank from the ingested air.bigdog said:Garvin said:
Easy. In a life a long time ago in a galaxy far far away called South Dakota. We would have wild swings in temperature. 108F summer down to -33F winter. This could play havoc if one didn't keep the tank full during winter. I even mounted a 35,000BTU aux kerosene heater to preheat the fuel and coolant in my FedEx lorry. At -20F #2 diesel turns nearly solid. Any condensation in a petrol or diesel system will freeze in short order. So, 1.3 million miles later over the course of ten yrs. I've seen & learned a lot of trivial BS stuff.
Regarding the other comments on evaporation, well most systems are pretty much closed so any signifcant evaporation will take years and I'm not sure modern fuels will crystallise out solids (deposits) even if significant evaporation did occur.
I think most can sleep easy about any problems with their fuel, whether the tank is full or not.
While that is true. The concept and physics are the same and are valid. Condensation does happen to petrol as well as diesel at much more moderate temps as well. And with the precise metering of most modern fuel injection systems that try to run our engines as lean as possible to meet pollution regulations. It doesn't take a lot of varnish, dirt, or water to cause an injector(s) to not operate at their peak. Esp as a lot of the forum members don't do many miles and live in a rather moist country. Any engine that has a fuel tank and sits for any period of time will have a smaller potential for issues if the tank is full as opposed to being empty. You would be surprised at how much water was in the fuel tanks in my truck from condensation. And I fueled up every day and never let the tanks go below 3/4 full. Even then. When I removed the tank filler cap. There was water on the bottom of that cap summer and winter.