'83 300CD. What is the fuel capacity?? My owners book says 21 gal. cap. yet I rarely add more than 16 gallons as the low light flashes & the needle is bouncing on the peg. Yesterday I fueled up at 19 gal & the light was (& had been) lit constantly for some time, made a detour to fill her up. (diesel = $2.83 - prem gas = $4.19, lovin' it !!)

Is the low light sensor in the tank sending unit, or in the guage?? Or is it a seperate system?

-c-

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