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Hector Salamanca

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  1. Hector Salamanca
    It's on fueleconomy.gov I noticed it when I was researching trucks. They're most likely getting their information from the manufacturers, unless they made an error it clearly reads Premium. I'm sure that using 87 Octane in the 6.2 is fine. We have a car in the household that recommends 91 octane, been running 87 since we got it in 2012 and its totally fine. If the manufacturer recommends it, then there is a reason why. I'm no expert, but its probably going to result in slightly better performance. Why else would they recommend it?
  2. Hector Salamanca
    The 6.2 is unquestionably more powerful. You will be able to tow more and your acceleration will be better. That being said, GM recommends premium gas for that engine for optimal performance. All I can say is that I am very happy with my 5.3 + 10 speed combo. Plenty of power. And it doesn't mind regular gas ?
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