Consider this:
Due to the vastly improved metal casting and machiningtechnologies which are now used, tight parts in new engines are not normal. A manufacturing mistake causing a tight clearance is an extremely rare occurrence these days. But, if there
issomething wrong with the engine clearances from the factory, no amount of gentle running will fix the problem.
The real reason ???
So why do all the owner's manuals say to take it easy for the first
thousand miles ???
This is a good question ...
Q: What is the most common cause of engine problems ???
A: Failure to:
Warm the engine up completely before running it hard !!!
Q: What is the second most common cause of engine problems ???
A: An easy break in !!!
Because, when the rings don't seal well, the blow-by gasses contaminate the oil with acids and other harmful combustion by-products !!
Ironically, an "easy break in" is not at all what it seems. By trying to "protect" the engine, the exact opposite happens, as leaky rings continue to contaminate your engine oil for the rest of the life of your engine !!
What about street bikes ???
Q: What's the third most common cause of engine problems ???
A: Not changing the oil soon enough after the engine is first run !!
Change Your Oil Right Away !!
The best thing you can do for your engine is to change your oil and filter after the first 20 miles. Most of the wearing in process happens immediately, creating a lot of metal in the oil. Plus, the amount of leftover machining chips and other crud left behind in the manufacturing process is simply amazing !! You want to flush that stuff out before it gets recycled and embedded in the transmission gears, and oil pump etc...
Why do the manufacturers recommend waiting until 600 miles toflush out all the loose metal ???
This is a good question ...
3 more words on break- in:
NO SYNTHETIC OIL !!
Use Valvoline, Halvoline, or similar 10 w 40 Petroleum Car Oil for at least2 full days of hard racing or 1,500 miles of street riding / driving.After that use your favorite brand of oil.
