Title: Experimental Assessment of 15w-40 Lube Oil Properties and Failure Effects on Performance and Availability of Heavy-Duty Machineries
Authors: S. L. Bani., S. E. Jack., H. U. Nwosu
Volume: 8
Issue: 9
Pages: 1-7
Publication Date: 2024/09/28
Abstract:
Lubricants plays crucial roles in critical sectors of the economy, which helps in promoting national development. The performance of this oil is based on the properties, which varies with changes in temperature and other variables. This study, assessed the properties of used and fresh 15w-40 lube oil through experimentation. The effect of oil failure on the functionality and availability of machineries was also checked using reliability indices. Different oil samples were collected for laboratory tests. Investigation show that total acid number for A-oil category reduced by 21% compared to fresh oil, but that of B-oil, C-oil, D-oil and E-oil increased by 30%, 47%, 9.8% and 55.6%, respectively. The total base number reduced for A-oil, B-oil, C-oil, D-oil, and E-il by 57.0%, 120%, 82.0%, 73.7% and 51.1%, respectively. It was also, revealed that viscosity of all oil samples tested reduced with length of operations of the construction machineries compared to the virgin oil. Investigation also indicate that mean time between failures of A-oil, B-oil, C-oil, D-oil, and E-oil was 128hours and availability of the trucks was 91.6%. The gradual failure of the oil has no significant impact on the failure and availability of the construction trucks.