I’ve been alternating between 87 and 89. Have not noticed any issues yet. Waste of money to go above 89 on a stock motor.I've been using 89 octane for one year now. Price is now close to $5 p/g. Am thinking about using 87 instead. Have any of you used 87 from new to current. Everything else I own is on 87 including 454 Chevy motorhome. Thanks
Thanks a lot. Now I'm going back to spending another $12 on every fill-up.Because we haven't had enough octane threads and because I'm quite bored ATM, I'll offer my pair of pennies.
The manual is "weasel words". You can say the engine is "designed" or capable of running on an 87, but that's like saying humans are capable of running on celery juice only for a few days. We all want steak, why do you hate your truck so much??
The manual recommends 89.
Put an ODB2 data logger in your truck, and get back to me on how often the 87 gas forces the truck to pull timing. Whether YOU notice it or not is kind of irrelevant, the engine absolutely does, and since the computer is reactive (knocking occurs first, then it retards timing after that), it's like feeding a diabetic a pack of sugar when you notice them trembling in the wind; kind of too late at that point, isn't it?
That’s because we spent all our money on our trucks. Lol.
It was a joke, but I definitely understand what you're saying.That’s like people that spend money on exotics and don’t factor in cost of ownership. They either ruin them by not performing the maintenance, sell them when it’s due.
Learned the lesson of factoring in cost of ownership from helping an uncle with his drag car. You may have enough to build it (or in this case buy it), but can you afford to drive it.
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