Re: Recycling oil
Here is a How to I found with a quick search,
I have not done this and have no idea if it really works or is okay for your truck.
http://www.ehow.com/how_4596315_filter-oil-make-diesel-fuel.html
1. Examine the oil that you are going to use for this project. Make sure it doesn't have any liquid contaminants you can see or smell. Some contaminants common in oil from engine damage include water and antifreeze. If the oil has either of these components in it, do not use it for this project.
2. Connect the 15 gallon container to the paint filter system so that the output of the filter goes into the container. Connect the filter system to the large funnel acquired for this project.
3. Slowly pour the used motor oil out of its container into the funnel system. Be sure not to overfill the funnel, and allow time for the liquids to process through the funnel and the filter, into the 15 gallon container.
4. Once you have filtered all of the oil in this manner for this container, discard the used filter. Disconnect the filter system from the 15 gallon container and measure the amount of oil using the markers on the side of the container.
5. Add the same amount of diesel fuel into the container as you have oil. For example, if the container now has 5 gallons of filtered used motor oil, then you will add 5 gallons of diesel fuel to the container.
6. Place the cap tightly on the 15 gallon container and begin mixing the diesel fuel and used oil mixture. A minimum mixing time of 15 minutes is required. If the solution does not appear to be completely mixed at this time, then it should be mixed for an additional 15 minutes. Repeat until the solution is completely mixed.
7. Add this solution to your vehicle as you would normal diesel. It is ready to go.
Read more: How to Filter Used Motor Oil & Make Diesel Fuel | eHow.com
http://www.ehow.com/how_4596315_filter-oil-make-diesel-fuel.html#ixzz17H2rfJ9H