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The LT1 model is designed as a street car. The SS is track capable. You basically reached the limit of what the LT1 can do. Oil at 250 is not too high as these synthetics are designed for it but you were at your limit.
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2019 ZL-1 Acquired 4/23/21 at 6300 miles. Riverside Blue, A10, PDR. Traded in 2017 2SS with 6M and 32k miles. Continental Extreme Contact Sports. Now has 10,000 miles...
2012 Yukon XL Denali w/ 6.2 AWD
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