Good points Cruiser and good thread!

Assuming oil mix is proper and mechanically the engine is sound (no loose nuts / bolts etc..)
I have heard that using the engine at MODERATE rpms will contribute the most to engine longevity.....I do understand that the urge to speed / over speed is always there and hard to fight....I Know....I have lost that battle many times!

Andrew

Oh - As with any engine proper warm up and cool down after a hard run is also very important....times vary depending on the weather and load on the engine.....I would not recommend full throttle on a cold engine nor would I recommend simply shutting off the engine after a long hard pull.