Advice on truck for towing?

I need advice on buying/leasing a truck for towing a 5000-7000 lbs cargo trailer. I leased a 2019 ram 1500 5.7 hemi and I'm doing a lemon law because it continues to have issues. I noticed I had really bad mpg. I know wanna consider getting a Ford eco boost or maybe even a f250 6.2 gas, or maybe a 1/2 diesel truck. Any recommendations? Will be towing about 3-4 a week Advice on truck for towing

How to lock differential?

I'm a new driver and need some helps. My e350 super duty ford van has one rear tire stuck in the mud and spin; I want to lock differential so that another rear tire can move on. Any advise is afficiated.

Check voltage on throttle position sensor 1988 Ford F250?

Check voltage on throttle position sensor 1988 Ford F250?

Added (1). Three TPS wires Black, Green, Orange.

Looking for 2 readings. 1st at rest is supposed to be .08 - 1 volt. 2nd, throttle open, up to 5 volts

Which wires are used for these readings?

I used to know but it's been so long I forgot?

I have a 93 Tercel 1.5 with a extreme fuel consumption and very poor gas mileage?

I have a 93 Tercel 1.5. The car is supposed to have a good fuel economy even if it's an older model. I'm not even making 7 miles per gallon eventhough it should it should be making around 25( given that the car is not new) or maybe a little more. Sometimes i only travel 3-5 miles tops and it spends half a quarter of the tank. Sometimes just starting the car uses around that same amount(half a quarter tank), I don't know if it burns so much gas when it's started or is it the map sensor that is running bad. I have been told by the mechanic that the car needs an overhaul, however do you think that is the real cause for this issue? Do you think the map sensor can be fixed or should i change it and that will fix the problem because i don't see any fuel leaks so i really don't know what is causing this excessive fuel consumption since I think not even a ford 250 will burn this much. Your insights will be appreciated.