How Often Do You Change Oil?

When do you need to replace your lubricating oil?contributing to acid corrosion and oxidation of the
If you haveoil, changing
a large quantity of lubricating oil to change, it isthe chemical composition of the oil itself.
going toHowever, if the water
burn a hole in your pocket. So most plantcontent is below 0.5%, it can still be removed by
operators try tocentrifugal
preserve the properties of the lubricating oil forpurifiers.The total base number is especially
as long asneeded for the cylinder liner
possible.One of the most important functions oflubrication of engines that run on poor quality fuel
lubricating oil is towith high
reduce the friction between the moving parts ofsulphur content. The base additive is used to
machinery. Butreduce the
there are other features to look at.When do youcorrosive effects of the sulphuric acid fumes on
know that the oil needs to be changed? Below isthe cylinder.With large diesel engine installations,
athe lubricating oils are
rough guide:1. Viscosity has changed by 10%continuously filtered and purified to reduce the
2. Flash Point has dropped to 150 degree Celsiusinsoluble
3. Water Content has reached 2%particles in the oil. Special strainers containing
4. TBN, or Total Base Number has reduced bymagnets are
20%used to trap particles of carbon or iron particles.
5. Insoluble Content has increased to 5% of theIn large
oilDue to the oxidation of the oil when exposed todiesel engines, the carbon particles are
heat and oxygen,byproducts of combustion
the viscosity of the oil tend to reduce. With thewhile the iron particles comes from rubbing of
reduction ofgears, cams or
viscosity, the film of oil between rubbing metalother parts where wear down still occur.The
surfacespresence of these particles interferes with the
becomes more difficult to maintain. This results inlubrication of
metal tobearings, most of which contain soft white-metal
metal contact, micro seizures that leads tocoating. The
scuffing, abrasionparticles can become embedded into the soft
and other damages.In large diesel engines, fuel oilmetal and cause
from dripping injectors orabrasion of the metal parts.The contents of this
fuel pumps sometimes finds their way into thepage are part of a page from my e-book
lubrication oil"General Engineering Knowledge Notes" that will
sump. This has the tendency to reduce the flashhelp candidates
point of theprepare for the Marine Certificate of
lubricating oil. In addition to reducing the viscosityCompetency Examinations.
that isThis e-book is available for FREE downloading at
detrimental to lubrication, this contamination withnext time...Make "hard-to-find" Tools
fuel oil can"easy-to-find". You can only Produce
be quite dangerous. If there is a hotspot in anyYOUR BEST with THE BEST!" Earn praises for a
of the rubbingjob well done,
parts, this can lead to a crankcaseonly with the PROPER TOOLS! Locate
explosion.Water can also find its way into theHard-to-Find Tools for your
lubricating oil from leaksgarage and workshop. Good for Cars, Trucks,
in the cooling water system o-rings or gaskets.Cycles, Boats, and
In addition toPlanes.
reducing the lubricating properties of the oil, theyears of working experience in Marine, Facilities,
presence ofConstruction has given the author material for
water in the oil can give rise to bacteria or fungalwriting e-books
growth,and articles related to engineering, and
which will quickly damage the oil properties asmanagement.
well as