This research was focused on the problem of lubrication of the TIGER engine in the Mbujimayi city, which causes harmful problems on this type of engine and which has an impact on the socio-economic life of Mbujimayi’s population. For that we tried to know the causes of the lack or the bad lubrication in the TIGER engine in order to propose some solutions to guarantee the long life of the engine.
The results obtained showed that a large part of the people interviewed, 83%, do not know why oil-gasoline should be mixed at the time of purchase and 17% have limited knowledge of this mixture. At the end of this study, it also emerged that 40% of the breakdowns that occur on the TIGER engine are wear and tear and is caused to 71.4% by the lack or poor lubrication.