It was established that over a 100 million tons of plastics are produced annually worldwide, and they have become a common feature of the overflowing bins and landfill sites. As they are inert and non-degradable, they do not mix or make bond with other substances. As a result as we enjoy the conveniences that plastics can provide, the treatment of waste plastics becomes an imminently challenging issue. In this regard, there is an urgent need to find effective ways to recycle waste plastics. This research study is focused on recycling of waste plastics to derive automotive diesel oil for use to power engines. Waste plastics are first treated in a heater at a certain temperature, and then molten plastic is passed into a reactor where its carbon chain break down into different components depending on different temperature levels. Then finally, in the distillation chamber various gases and diesel fuel fraction are recovered.