what's with the gas gauge

Hi everyone.

After 9 months of searching, I found the SVX I was looking for, a 96 LSI, Laguna blue. I am one happy person !

I have 0 problems with this car (a short term situation, if these threads are any indicator), but have noticed one item that raises my curiosity, and that has to do with the gas gauge. From what I have learned so far, the SVX can carry 18.1 gallons of fuel. Yet, when the gas guage is showing about 1/8 left and I then fill, I can only put in about 10 gallons.

Is there some method to calibrate the gauge so that it displays something more truly representative of what I have left in the tank?

Thanks to all who respond...this forum has yielded a wealth of worthy information!

svxcel