Flat bed diesel truck engine idles ok but will not accelerate, let out large smoke?

Drained tank found dark color fluid like used oil. Replaced with new diesel. Oil dirty but at good level. Let truck sit for less than hour. On the road it took off ok but began to refuse to accelerate and intermitently came to a near stop with engine still idling. When it reved up, very little and every few seconds even more difficult going up slight uphill. Managed to crawl about 5 miles to get closer to home.
Next day bled 4 injectors, removed.small (air hose?) near oil to alternator tube. Truck ran for about two miles then repeat same. Drained fuel filter/water separator? with primer pump. Found sludge. Did not change filter. Only cleaned and primed.Tried driving it, same. Help.

What are some good tips for launching a large boat with a 2 wheel-drive truck?

My boat and trialer weigh around 8500 pounds loaded up with water and gas. My truck is a 2 wheel-drive 3/4 ton truck that pulls the boat very well. I just bought the boat and went out last weekend with the company I bought it from. We used their truck to do the launching and I towed it home.

I’m going out to Newport Beach, CA this weekend to launch and I’m worried my back end is going to slip all over the place.

What can I do to prevent this? I heard putting carpet down can help. Scrubing the ramp down too might help.

Could US industry support the large demand of E85, or Hydrogen, if they became the primary methods of fuel?

Lets say that its 20 years later (or whatever) and cars in the US are fueled by E85. Would we be better off, cost-wise, then we were buying gas? That is to say, could the US farming industry support a large demand of E85, and keep the prices low (and by low, I mean under $2).
Same question for Hydrogen: could it be produced with such volume to keep the prices low enough?
I guess the overall question is, are these alternative fuels capable of being more financially feasible then gas is to us now?

how large is the hydrogen fuel tank on a car and what is the most fuel efficent gas powered car in the us/06?

and how long will that one tank last the driver