I just bought a 1994 ford f250 7.5 auto 4x4.I plan on changing wires,plugs,cap and rotor and fuel filter and air filter.First question is what weight for the diff fluid do i need for the front and rear diff.I am not sure how much fluid i will need for the transmission.I think i got e40d.Its got the over drive push button on shifter.And i heard gas millage isnt to good for the 460.

 

The trans will take 14 quarts,,,,,,if you drain the pan and the torque converter which has a drain plug for those years. On the bottom of the trans bell housing there is a rubber plug that you can remove to see the plug if you turn the flywheel by hand. They did have a healthy appetite and how you drive it will help get the best MPG. Some used gear lube 85W90 and some used 85W140.
The synthetic lube would be 75W90 or 75W140.

 

One more question i have to redo the who exhaust system stating with the y pipe.Their was no Catalytic Converter on it.From what i seen their is only one 02 sensor and it goes in the y pipe.So i am woundering did it even come with one on it.If it didnt all i have to buy is a y pipe,muffler and some 3 ince pipe.I want the exause to sound good but not have the drone noise to it.I want to hear your guys think about this.