• K Veeranjaneyulu
• T Venkateswara Rao

The basic function of lubricating oil in machines is to minimize friction and wear in order to enhance their life span of machines. When lubricating oils have been used beyond their recommended life span, improper disposal can be harmful the environment. and also, Due to scarcity of diesel products, the used engine oils can be used in CI engine as fuel after purifying it. Production of diesel fuel from used engine oil is involved heat treatment, chemical filtration and find the properties of the final product of waste oil and compare with fresh diesel, To evaluate the performance of the engine .These purified oil use as fuel in ships, light vehicles, buses, trucks etc. and it reduces the economic loses, fuel cost, environmental pollution and disposal problems. Main advantage is reuse the waste engine oil as a fuel then there is a decrease the amount of fuel requirement so economically helpful.

"EXPERIMENTAL INVESTIGATION ON SINGLE CYLINDER FOUR STROKE C.I ENGINE FUELED AS A PURIFIED ENGINE OIL", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 4, page no.145-156, April-2019, Available :http://www.jetir.org/papers/JETIR1904B22.pdf

"EXPERIMENTAL INVESTIGATION ON SINGLE CYLINDER FOUR STROKE C.I ENGINE FUELED AS A PURIFIED ENGINE OIL", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 4, page no. pp145-156, April-2019, Available at : http://www.jetir.org/papers/JETIR1904B22.pdf