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David3807 · 24th July 2007, 13:15

TBH I would trust neither and fill the tank a bit more often.

If you really must run the car until the light comes on test it a few times. As soon as the light appears fill up to the top. Deduct the number of litres you put in to fill from 65 and thats what you had left. If you do that a few times you will get a rough idea of what the light and gauge are showing you.

Even then its a bit hit and miss. All pump cutoffs are not the same. All garage forecourts are not level. The car may not be loaded in the same way each time. All these will effect exact amount of fuel you get in.

24th July 2007, 13:15	#2
David3807 Posted a thing or two 2002 R75 Conn SE 2.5l Auto Tourer, 2001 R75 Conn SE 2.5 Auto Saloon Join Date: Nov 2006 Location: Gravesend Posts: 1,897 Thanks: 0 Thanked 2 Times in 2 Posts	TBH I would trust neither and fill the tank a bit more often. If you really must run the car until the light comes on test it a few times. As soon as the light appears fill up to the top. Deduct the number of litres you put in to fill from 65 and thats what you had left. If you do that a few times you will get a rough idea of what the light and gauge are showing you. Even then its a bit hit and miss. All pump cutoffs are not the same. All garage forecourts are not level. The car may not be loaded in the same way each time. All these will effect exact amount of fuel you get in.