Archive for October, 2010
The German automaker BMW announced voluntary recalls of 350,000 BMW vehicles globally, including 5800 Rolls – Royce, because of problem with brakes.
BMW AG is issuing the recall of nearly 200,000 luxury vehicles in the U.S. in order to fix leaks that could develop in the power braking system of the cars. This problem can result in a loss of vacuum pressure and a reduction in the amount of braking assistance the system gives the driver. When this occurs, the mechanical brakes still function and can slow and stop the car, but requires more driver effort to press the pedal.
It might also affect another 150,000 cars of the same series around the globe.
The BMW Recall 2010 covers various models of BMW vehicles, including BMW 5 Series, 6 Series, and 7 Series that are powered by V8 and V12 engines. Vehicles included in the BMW Recall 2010:
- 2002-2008 BMW 745i/Li, 750i/Li and 760i/Li;
- 2007-2008 BMW Alpina B7;
- 2004-2010 BMW 645i and 650i;
- 2004-2010 BMW 545i and 550i,
- 2003-2010 Rolls Royce Phantom models.
We put motor oil in our engines to serve several purposes. First, obviously, oil acts as a lubricant. If your engine is operating correctly, there is almost no metal to metal contact – everything is riding on a thin film of oil. However, oil has several other important jobs to do. Oil circulates throughout your engine, and cools parts that cannot get near a water jacket. For example, it’s becoming common in sport bikes to spray oil on the underside of the piston to cool it. There are no water jackets at all in your transmission. Motorcycle transmissions are oil cooled.
Your piston rings do not do a perfect job of sealing. Some combustion by products will slip past the rings into the engine. This can be little particles of carbon. Remember, diamond is carbon that was combined under heat and pressure. These little carbon particles can be quite damaging to your engine. Another job of your oil is to hold these particles in suspension until the oil filter can grab them. Also, if your gasoline has sulphur in it (it does), this sulphur can react with water and oxygen to make sulphuric acid. This is some stuff that is seriously bad for your engine. Your oil has special ingredients in it called buffers to neutralize acids. Finally, your engine can get internal build ups of tars, waxes, and other gunk. Your oil has solvents to try to dissolve this stuff and get and keep your engine clean.