Quote:
Originally Posted by Yannis  Modern Engines if handled with care for the first 5,000 km don't consume much old later in their lifetimes.
I have the suspicion that that particular S5 was handled pretty bad for the first thousand km and that has caused the oil issues. The first few hundred miles of a new engine's life have a major impact on how strongly that engine will perform, how much oil it will consume and how long it will last. The main purpose of break-in is to seat the compression rings to the cylinder walls. We are talking about the physical mating of the engine's piston rings to it's corresponding cylinder wall. That is, we want to physically wear the new piston rings into the cylinder wall until a compatible seal between the two is achieved. Proper engine break in will produce an engine that achieves maximum power output with the least amount of oil consumption due to the fact that the piston rings have seated properly to the cylinder wall. When the piston rings are broken in or seated, they do not allow combustion gases to escape the combustion chamber past the piston rings into the crankcase section of the engine. This lack of "blow-by" keeps your engine running cleaner and cooler by preventing hot combustion gases and by-products from entering the crankcase section of the engine. Excessive "blow-by" will cause the crankcase section of the engine to become pressurized and contaminated with combustion gases, which in turn will force normal oil vapors out of the engine's breather, causing the engine to consume excessive amounts of oil. New Engine Break-in Procedure |
In all honesty mate, we are all screwed then. I have seen dock staff thrashing new cars within an inch of there life taking from ships to lorries etc.
So when you pick up your new car and drive it carefully for 1000miles all seems a bit pointless when its already seen FULL THROTTLE and the red-line!
Dealers also drive them hard. So even if your car has a tiny amount of miles 3-10. All of them would be hard miles thus rendering the running in procedure pointless.
Carlos