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I'm not sure here. I guess from the engine builders I've talked to they usually say the best way to break in an engine is on a dyno. They all agree with you that you need to vary rpms, but I haven't heard that it is ok to run the engine hard during the first 500 miles. I've always been fairly easy till I get around 500 miles then run her up to 80-90% of redline every so often till I get to 1000 miles. I've never had an engine that used oil and I tend to be fairly hard on the cars I've owned. (02 Z28 had several hundred dragstrip passes in 30,000 miles. I have also had a couple cars make it to 300,000 miles. A Cavalier and a 3cyl Geo Metro and neither would use more than a qt between changes.)
I can see an early change of the oil, although I did mine around 2,000. There have been studies done showing no wear difference over a 100,000 between changing the oil at 3,000miles, 6,000 miles and 9,000 miles. These tests were done on taxi cabs. I know I don't drive my car that hard. They measured the weights of the pistons with rings before and after the test and mic'd the cylinder walls. The factors that most affect oil life are heat and moisture. If you run your car extremely hard and experience high oil temps you will break the anti wear additives down. Also if you do not drive the car long enough to get the oil hot enough to burn the moisture that has accumulated in your oil off, sulphuric acid will form, and the oil will break down. A daily driver with few short trips and a good synthetic would be just fine for 10,000 plus miles. A car that does SCCA racing might require an oil change every 500 to 1000 miles depending on the amount of racing. A car that only comes out on weekends and never really gets pushed hard or driven long might need changes every 6 months regardless of mileage. With the way I use my car it would be a huge waste of money to change it every 2500 miles.
The slick 50 from what I hear is at best snake oil, and I have heard horror stories of ruined engines from it.
As far as the cooling system, again heat from the way it gets used is more of a factor, along with time. My plans are every 3 yrs with the proper high performance coolant.
I disagree with your statement on fuel. Most fuels from name brands contain the needed detergents and formulations to provide superior performance. I don't use off brand, but know people that do and have little or no fuel issues.
I will agree 100% with the warm up and cool down.
The engine management computer has a rev limiter to protect the engine. When GM and most engine manufacturers set redlines via the rev limiter, they are conservative. They will still warranty the engine if you have hit the rev limiter. Also the LS2 doesn't make it's power till high in the rev ranges you need the top revs to get the most out of the engine.
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