Since evidently, no one knows much about the FSS I want to tell you this.

The person worried about 24 months obviously does not know that this is why the word "Flexible" is in FSS. If you are taking short trips, it will flag for service at a lower mileage. Additionally, even if you only drive it one mile, once a month, it will call for service after 16 months. Additionally there is a resistive sensor that tests the oil for contamination. This is not a highly scientific test, but added to the other information monitored by the algorithm, this makes for a pretty good indication of when to change oil.

Also, the engines are sludging up because of those who insist on using dino oil and still going by the FSS. Did no one read what I wrote about MB offering 150,000 mile engine warranties for those who ran dino oil before MB let people know to run synth if you were relying FSS intervals?

Also, If there is a car company that wants their cars to go high mileage, MB is it. They have even amassed huge advertising campaigns in the past surrounding the high mileage MB's in the world. They also promote a high mileage award program. Does anyone else do this?

That said, all car companies are building their cars to sell to first owners. MB themselves get no money when the car sells to the second and subsequent owners. They do sell more cars, however, because of the MB resale value and the fact that many have learned that buying a used MB is getting something that can be repaired, rebuilt and kept on the road. It's not built like a dollar watch as are many American, Japanese and low end European cars.

I personally will never run my car all the way to the FSS indication without an oil and filter change of Mobil One in between, but I am admittedly anally retentive when it comes to oil changes.

If a person will do what MB says and USE SYNTHETIC OIL, then the FSS intervals will work. This is much more than marketing hype. Even if it is marketing hype, no one holds a gun to your head and tells you that you can't change your until the FSS system says you can. What's with such conspiracy theories anyway?

My $0.02,