Oil - Life-Blood of your
Engine
 Friction
is caused when metal surfaces rub against each other when your car's
engine is running. This friction generates heat. It is the job of
your engine oil to cool these metal surfaces and lubricate the moving
parts to minimise wear.
Oil Lifecycle
In addition to cooling and lubricating the metal surfaces of your
car's engine, oil carries away dirt and metal particles, which are
the by-products of the combustion process. Many of these contaminants
are removed from the oil by the oil filter, but eventually (usually
every 6,000 miles) the oil and filter can become clogged with debris.
If engine wear is to be minimised and the engine's optimum efficiency
maintained, both must be replaced.
A Change for the Better
Recent environmental legislation dictates that only a carrier registered
with the environment agency can conduct the disposal of waste oil
- effectively putting a stop to DIY oil changes.
National only use registered waste disposal carriers, what's more,
we have the skills and equipment to carry out a low cost oil and
filter change, in just a few minutes. No hassle, No mess and No
disposal problems.
Do Not Put Clean Oil in a Dirty Engine
 We always recommend that before refilling with fresh oil, the entire lubrication system is flushed with an appropriate cleansing agent. This will remove the build-up of tar and sludge which can block the flow of oil around the engine.
A low cost engine flush only takes a few minutes and the engine can then be filled with new oil. National recommend an engine flush before fitting a new oil filter and refilling with clean oil.
Right Oil - Right Price - Right Now
At National we only use top quality oil and the correctly specified oil filter for your vehicle, so you always know you have bought the best.
There are several different types of oil, and oil technology is a highly complex science. Understanding the difference between a synthetic oil and a standard multigrade oil is important for your car's performance.
Oils can be differentiated by their viscosity (or thickness) - as oil is heated, it becomes thinner, this can impair its protective properties. Making the oil thicker would mean that a cold engine would be difficult to turn over and start because of the drag of the thicker liquid. To overcome these problems multigrade oil was developed; thin enough to enable easy starting but resistant to thinning too much when the engine is hot.
Many modern engines with a greater efficiency and higher performance are specified with an enhanced oil i.e. synthetic oil. Synthetic oil provides the same level of hot/cold protection as a multigrade but contains special additives to enable the performance thresholds to be reached more quickly. Synthetic oils also have greater detergent properties and better carbonisation controls than multigrade oils.
Choosing the right oil for your car is best left to the trained technicians at National, so why not give your car's engine a new lease of life and ask for details of National's oil and filter change.
Nobody tries harder than National.
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