Fuel tank "porous"?

[richardreid]

Originally Posted by SD1too

Thanks for coming back to me Richard. I think you're referring to the fuel gauge having rotated sixty degrees from the vertical 'full' position. Gauges are very approximate so cannot be used for consumption calculations. Their movement is also non-linear. For these reasons it is extremely unlikely that you used one third of a tank of fuel during your 35 mile drive. That's about 7 mpg!

If you really want to know what your average consumption is, fill the tank until the petrol pump nozzle shuts off and note the mileage. Drive until the low fuel warning shows then refill to the brim again noting the new mileage and the number of litres purchased. Divide the latter by 4.546 to obtain gallons and you'll have your average mpg.

There's nothing wrong with your car Richard. Relax and enjoy it.

And take what some garages tell you with a pinch of salt!

Simon

thank you. I shall do that and report back- in fairness to the garage he thought he'd seen staining on the outside of the tank near the top that indicated fuel egress and there is some faint smell of fuel when filled but I'm sure a proper test will further refine the possible faults