Key to engine health, longevity and fuel efficiency.
Condition based servicing
Newer generation BMWs produced from around 2001 onwards are fitted with a digital service indicator system called “CBS”, otherwise known as Condition Based Servicing. This essentially means that your BMW vehicle will tell you when it needs an oil change and the reminder message will appear on the speedometer dash area or the idrive system (if your vehicle is fitted with an idrive).
The CBS system has evolved over the years with the help of advances in sensor technology, enableing the onboard computer to analyse the condition of your engine oil with ever more accuracy and precision than before. This is combined with BMW’s clever algorithm which takes into account various other factors such as how hard the engine is driven, giving you a real time indication of when an oil service is required for your vehicle.
And this is a big but. Manufacturers are under a lot of pressure and thus highly conscious of economy and efficiency even when it comes to service intervals.
The BMW recommended oil service intervals are far too long and if you truly want to maintain a healthy, reliable and efficient engine that lasts way beyond the warranty period, you should have this service carried out more often, or ideally at half the recommended service interval.
BMW recommended oil service intervals can be anywhere between 15,000 miles, up to 25,000 miles. Yikes… that is scary
It is true that engine oils have come a long way and perform far better than their predecessors, however, it does NOT mean that they can last such long intervals without serious deterioration in their quality and therefore the physical properties required to provide maximum protection for your engine.
The majority of BMW vehicles today are turbo charged which not only increases engine operating temperatures leading to faster oil quality deterioration, but the turbo charger itself is also heavily dependent on quality engine oil for lubrication as it spins up to a ludicrous 250,000 RPM (Rounds Per Minute). I am sure you can see where we are going with this. The turbo charger is even more sensitive to oil quality than the engine itself which makes regular engine oil service a must if you want to avoid excessive wear and premature turbo failure.
WE RECOMMEND 7,000 MILES INTERVALS
WHY DID BMW not think of this?
Of course BMW engineers are aware of these limitations, but they have to consider the commercial aspects of their new vehicles. BMW just like other car manufacturers is under huge pressure to lower the running costs of their vehicles in order to make their cars more attractive to potential buyers, which is why the recommended oil service intervals are set at the maximum limit if not beyond today’s engine oil life expectancy.
We use the latest fully synthetic Castrol Edge oil which is recommended by BMW.
An alternative to Castrol is the high specification fully synthetic Mobil 1 ESP Formula oil which we believe is a high quality and proven engine oil on par with Castrol Edge. We have used this in our highly tuned 400bhp twin turbo 335d vehicle for many years which has now covered over 160,000 miles and still running strong.
We offer two types of oil filters;
- Genuine BMW oil filter
- Bosch or Mann OEM Quality oil filter (depending on availability)
In our opinion, there is no difference between them in terms of performance, and the price difference is negligible. It comes down to your personal preference but we like to give you the option.