Ok we all know syn. will last longer than dino oil. Again though, if the FSS system is monitoring the "quality" and conditon of the oil, why then does it wait until it's too late for dino oil, to tell you to change it. In other words lets say under "X" driving conditions, dino is good for 5K, why then does the sys. wait until say 10K, to tell you to change it, if the sys. is supposed to tell you when the oil has reached it's useful life? I mean, if you use synthetic oil, you certainly don't need a computer to tell you that you can go longer between changes.
1994 MB E320 Coupe (199,500 mi)
1992 MB 190E 2.6 (173,000 mi)
1983 Porsche 911SC (148,000 mi)
2004 Volvo V70 2.5T (198,000 mi)
President of CT/Westchester Section