METAL CONTENT IN NIGERIAN USED ENGINE OIL

Publication Date : 01/08/2006

Author(s) :

D.B. Yahaya, I.S. Diso.

Volume/Issue :

Volume 1

Issue 1

(08 - 2006)

Abstract :

Atomic absorption spectroscopy was used in determining the metal content in Nigerian used engine oil samples. Various engine oil samples were analysed ranging from SAE 10, SAE 40 to SAE 50 taken from the sumps of three different internal combustion engines (504 Peugeot Station Wagon, Mitsubishi Lancer, Asia Combi Bus) after service covering 1000, 1126, 1500, 2000, 2500, and 3000 Kilometers. The samples of these oils were prepared and traces of elements in the various engine oil samples were analysed and result obtained indicates various degree of wear in certain component of the engine as oil ages. Iron (Fe) content in the oil samples increases as the oil ages, Zinc (Zn), Calcium (Ca) and Sodium (Na) decreases as oil ages, while potassium (K) was initially observed to increase but later decreases as the oil ages. Different reasons could be advanced for these. It could be due to wear of the engine parts (cylinders, piston rings, bearings) and sacrifice of anti oxidant additives to protect the bearings from corrosion.

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