Process Of A Full Or Major Car Service

In a minor service there areseveral items that required checking rather than replacements i.e. spark plugs and air filter. During a major service operation  these two items tend to be replaced as a matter of course, this is purely down to the fact that vehicle parts do deteriorate over a period of time irrespective of the miles covered.
mechanic major service

We must not lose sight of the benefits afforded by the latest generation of long life spark plugs which incorporate the use of platinum tipped electrodes and generally have an effective service life of around 50,000 miles.

Air filters on the other hand do not have the same advantages, their life is dictated by the air quality passing through the filtering elements and usually the better job they do the shorter their effective life.

Replacing Filtration Filters

On the subject of filtration there are two other UNITS which should be changed or with one in particular, inspected and changed if required. The fuel filter can have an enormous effect on the way a vehicle runs and is ignored at your peril, as with any filter device it  has a finite life and once past a certain point it simply cannot remove any more impurities from the fuel, leading directly to poor performance and rough running. 

Not quite so important is the cabin, or pollen filter, this device simply filters incoming air for the vehicle interior. Again, as with the air filter, its effective service life will depend on the quality of air being drawn through it. 

What Fluids And Oil Needs Replacing

We now consider the liquid specifically the brake fluid and the engine coolant. Tthe number of requests for a brake fluid change can be counted on two hands and is easily outnumbered many many times over by the requests for coolant/antifreeze change.

The main reason for changing the brake fluid every two years is that absorbs moisture from the atmosphere and once the moisture content exceeds a certain level and subjected to temperatures exceeding 100c then that moisture will boil, forming steam “pockets� in the brake system. Liquids are not compressable but gases are, that compression is provided by brake pedal action leaving you the driver with a pedal that goes nearly to the floor without having any braking effect!

No matter how long you leave changing the engine coolant it is unlikely to cause you and your passengers any physical harm as in the ancient brake fluid scenario, however , serious damage can occur to your finances due to corrosion within the cooling system (long term) or more catastrophically, a frozen engine (short term) , draining and flushing the cooling system then refilling with a 50/50 mix of water and antifreeze will help address the above and should be carried out at two year intervals.

As with all maintenance procedures the objective is to address the deterioration which occurs during use and the content of these procedures should be calculated according to that use, hence the regular oil changes, inspection of brake, steering and suspension all the way through to the bi annual changing of brake fluid and engine coolant. .