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25/04/2023 3:51 pm
Topic starter
I live in Colorado and our pumps have 3 grades 85, 87, and 91 octane gasoline. I have a new Toyota 4.0 liter engine. The manual says use 87 octane and the dealer recommended 87 octane. My understanding is at high altitude (5000 feet) 85 octane is ok. What does Scotty recommend?
3 Answers
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26/04/2023 7:50 pm
Please use the search. This was already asked a few times before.
https://carkiller.com/scottykilmer/qa/fuel-rating/#post-263007
My understanding is at high altitude (5000 feet) 85 octane is ok
Yes, this is a real thing. There's less air at altitude. It's like the opposite of turbocharging. If your engine doesn't knock then go ahead.
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25/04/2023 8:46 pm
I would use 87.
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27/04/2023 9:49 am
87.
