On a full tank = 36 gal x 6.073= 218 lbs.

 

I did the math already. My truck is leaning to one side on a quarter of a tank. I'll be checking it in a couple of days when I refill it to note any changes. I do a visual underneath this evening to look for any obvious reasons for this lower left side. I thought these tanks were over the axle?

 

I measured all four corners before and after filling up. My truck is level when the gas tank is empty, and about a 1/4 inch down on the left side when full of gas. I have a post about it here:

https://www.f150forum.com/f38/how-mu...t-level-94957/

 

Thank you for your input. I guess I won't be concerned with it al.

 

Mine is also not level - driver side is ~3/4" low with about 18 gallons of gas. If the gas theory is correct, then wouldn't the passenger front side dip down when the driver rear side lifted up? I wouldn't think the bed would just sag in one corner due to the added weight. I too will check when near empty.

 

Oh the ranger forums this came up often, weaker suspension ect it was worse. The fuel tank is long, attached to the driver side frame rail. On mine its from the driver door to the axle, 26 gallon tank.