Yes, you can use it, but the gas gage will stay buried on full until you get down to 3/4 tank or so, and then start dropping.... the closer you get to empty (0 ohms) the more accurate the gage will become.... but will always read high.... not really a good thing.... it will work, but it would be awful annoying to me....
90/120 = 3/4 tank actual (90/90 - gage reads full)
60/120 = 1/2 tank actual (60/90 - reads 2/3)
30/120 = 1/4 tank actual (30/90 - reads 1/3)
15/120 = 1/8 tank actual (15/90 - reads 1/6)
0/120 = walking, cussing.... (0/90 - reads empty....)