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I have had a 2010 Enclave for 58000 miles and used all kinds of gas in it. Seems to get best mileage with 89 octane 10% ethanol blend at 1000 ft msl in Iowa summer and winter. I use 87 octane in Colorado at 5000 to 10000 feet. I get about 20 mpg hwy with AWD and travelling at "about" the speed limit. If I slow to 65 it gets about 22 mpg in summer. Not as much difference in winter.
What else can I help you with?
Is the 2011 Buick Enclave electric or gas?
The 2011 Buick Enclave is a gas-powered vehicle.
Is the 2009 Buick Enclave electric or gas?
The 2009 Buick Enclave is a gas-powered vehicle.
Is the 2008 Buick Enclave electric or gas?
The 2008 Buick Enclave is a gas-powered vehicle.
Is the 2013 Buick Enclave electric or gas?
The 2013 Buick Enclave is a gas-powered vehicle.
Is the 2014 Buick Enclave electric or gas?
The 2014 Buick Enclave is a gas-powered vehicle.
Is the 2010 Buick Enclave electric or gas?
The 2010 Buick Enclave is a gas-powered vehicle.
Is the 2012 Buick Enclave electric or gas?
The 2012 Buick Enclave is a gas-powered vehicle.
How many gallons does the gas tank in the 2010 Buick Enclave hold?
The gas tank on the 2010 Buick Enclave holds 22.0 gal..
How many gallons does the gas tank in the 2011 Buick Enclave hold?
The gas tank on the 2011 Buick Enclave holds 22.0 gal..
How many gallons does the gas tank in the 2013 Buick Enclave hold?
The gas tank on the 2013 Buick Enclave holds 22.0 gal..
How many gallons does the gas tank in the 2014 Buick Enclave hold?
The gas tank on the 2014 Buick Enclave holds 22.0 gal..
How many gallons does the gas tank in the 2009 Buick Enclave hold?
The gas tank on the 2009 Buick Enclave holds 22.0 gal..
