Bio-diesel is a sustainable, renewable and alternate fuel for CI Engines. The
use of bio-diesel produces various durability issues on key components of CI engines.
For durability studies, the aspects considered are injector coking, carbon deposition on
piston, lubricity of engine oil, wear and tear of piston and cylinder walls and corrosion
of engine parts they come in contact with fuel. In this work, reports about the durability
aspects, published by highly rated journals in scientific indexes, have been cited. From
these reports, the effect of bio-diesel on engine durability are surveyed and analysed.
The use of bio-diesel leads to injector coking, increased carbon deposition on piston,
decreased viscosity of the lubricating oil and fuel dilution, increased engine wear and