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Showing results for tags 'break-in'.
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I got my oil changed at 1356 miles and got a sample. About 900 miles were on the gas engine according to the car computer. Copper and silicon were high, which is typical for break in. 87ppm vs 23ppm and 48 vs 21ppm average for all vehicles with 7200 mile interval. To me that proves that modern engines DO have a break in period, contrary to popular belief. In just 900 miles on the ICE, the oil accumulated several times the typical engine in 7k miles. It also shows that the filter doesn't capture every bit of metal. Fuel % is also 3% which they say gets better after break in. What surprised me though was the oil viscosity. The viscosity numbers are at the low end of what they should be for 0W-20 oil, and the flashpoint is 325F when it should be over 385F. It may not matter for these cars like it would for a turbo though.
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