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Old 03-19-2014, 06:10 PM   #6 (permalink)
ksa8907
Master EcoModder
 
Join Date: May 2012
Location: Tampa, FL
Posts: 1,745

Volt, gas only - '12 Chevrolet Volt Premium
90 day: 38.02 mpg (US)

Volt, electric only - '12 Chevrolet Volt Premium
90 day: 132.26 mpg (US)

Yukon Denali Hybrid - '12 GMC Yukon Denali Hybrid
90 day: 21.48 mpg (US)
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what is your climate like? last time I had an issue with temps that high i had a bad pressure cap. Come to find out, they are a typical wear item and cheap to replace. Try that first, if that doesn't help id suggest putting some Seafoam in the oil and changing back to the usual oil after a tank.
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