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My Rodeo Sport has had a faulty fuel gauge ever since I bought it in September. Every time the fuel light comes on then it only takes 10 gallons to fill up. This is not a big deal as 10 gallons lasts me a whole week anyway. I will eventually be replacing the sending unit but I was just curious, how much fuel do these things hold? I have seen specs online stating 15 gallons but others say 17 gallons.
 

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Mine holds just over 15gallons. The light turns on when I reach just under 12 gallons. Always seem to fill up about 11.5g at the pump. My city commutes nets me about 165 miles before the light turns on or about 14 mpg. AC and after market fan clutch does contribute to the low mileage

Also I hate the way the sending units works in this truck. The first 1/2 tank read 100 miles (50 miles per 1/4 tank). The next 2 1/4 tanks read 30miles each. The gauge doesn't read linear to me.
 
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