Publisher Summary This chapter makes a comparison of rerefining and combustion routes in terms of saved petroleum equivalent tons. Both routes are used depending on whether financial support is available either for collection or for elimination. Upon examination of the methods of energy recovery, it appears that in terms of saved petrol equivalent tons, the advantages of the two routes of energy recovery, viz. regeneration and combustion, are not so clear. A closer analysis of the situation is made, taking into account the manufacturing energy cost of new oil in the combustion route and of the regenerated oil by the rerefining route; the comparison must be based on a complete statement of account. It is clear from an economic evaluation that the success of the described processes in the chapter is inextricably linked to the price of crude oil.