I know this is really off topic, but with the rising gas prices, I'm trying to find a way to get ahead at the pump.
Currently, our gas prices in HI are about $2.45 for premium and about $2.20 for regular. Costco sells its gas at $2.12 for premuim and under $2 for regular but the lines are long (approx. 10 min. wait).
I have two questions that I hope someone can help me with: 1) Is there a difference between Costco's gas and Chevron's gas?; and 2) does the grade of gas (i.e. premium v. regular) make a difference in gas mileage. When I spoke with the attendant at Costco, he said that Costco gas does not contain all of the same additives as other gas, but does contain Costco's own additive. As for the mileage thing, I read a letter to the editor today where the writer claimed to get an additional 13 mpg on premium in a Buick Park Avenue. I'm extremely skeptical about his results, but I have found that premium might get me another 2-3 mpg, but I'm not sure why. When I crunch the numbers, it almost seems like it's a savings to put in premium over regular. Any comments or thoughts?
Currently, our gas prices in HI are about $2.45 for premium and about $2.20 for regular. Costco sells its gas at $2.12 for premuim and under $2 for regular but the lines are long (approx. 10 min. wait).
I have two questions that I hope someone can help me with: 1) Is there a difference between Costco's gas and Chevron's gas?; and 2) does the grade of gas (i.e. premium v. regular) make a difference in gas mileage. When I spoke with the attendant at Costco, he said that Costco gas does not contain all of the same additives as other gas, but does contain Costco's own additive. As for the mileage thing, I read a letter to the editor today where the writer claimed to get an additional 13 mpg on premium in a Buick Park Avenue. I'm extremely skeptical about his results, but I have found that premium might get me another 2-3 mpg, but I'm not sure why. When I crunch the numbers, it almost seems like it's a savings to put in premium over regular. Any comments or thoughts?