// Premium Fuel Required For 2008 HH?
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  1. #1
    Junior Member
    Join Date
    Oct 2007

    Premium Fuel Required For 2008 HH?

    Does the 2008 Highlander Hybrid require premium fuel?

    If so, where is the trade-off in economy? With premium at about 20 to 30 cents more per gallon I would like to see a good increase in milage to justify the cost.

    I am interested in the Highlander to replace my aging Jeep Cherokee, but if I have to use premium fuel in the beast then I'm finding it harder to justify the purchase.

    My old Jeep gets 20 mi/gal with regular at $3/gal that is $15 for 100 mi. If the Hybrid Highlander gets a realistic 25 mi/gal and Premium at 3.20/gal then I pay 12.80 for 100 mi.

    I guess any savings is good, but I would certainly like to see a better milage performance. I would go with a Camry or a Prius, but they a harder to haul the kids and camping gear in.

    Any thoughts?

  2. #2
    Junior Member
    Join Date
    Mar 2017
    From the 2008 Owner's Manual, page 544

    Your vehicle must use only unleaded gasoline. Unleaded gasoline with an Octane Rating of 87 (Research Octane Number 91) or higher required for optimum engine performance.

    At minimum, the gasoline you use should meet the specifications of ASTM D4814 in the USA and CGSB3.5-M93 in Canada, eh.

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