I use Shell regular gas all the time and haven't tried any other brand of gas for our CX-5. But I do notice our BMW 528i could get 3 more mpg on the long highway trip when I use Shell 93-octane than Chevron 93-octane, a significant improvement!I am using Costco normal gas. I am getting 23mpg in city . When I tried shell, I am getting 24 .
which companys fuel gives best performance for mazda vehicle ? what you guys opinion from your experience ?
I'm guessing 1 mpg is within the margin of error. IOW, may be no such gnu giant difference due to variables and measurement error.
Although different brand of gas may come from the same refinery, but the detergent pack from different brands added before the gas gets shipped into gas stations is different. That's why there's a list of top tier detergent gasoline.Brand of gas does not matter. Most of the times, it all comes from the same distribution plant in your region.
Although different brand of gas may come from the same refinery, but the detergent pack from different brands added before the gas gets shipped into gas stations is different. That's why there's a list of top tier detergent gasoline.
Very true! That's why I've always been trying to use newer gas stations hopping their underground tank is in better shape and their pump is more accurate.Condition of the gas station's tanks (and level they're at when you fill up) can make a difference also... especially margin of errors like 1mpg... the tank can have water in it, sediment, old gas...
I'd not worry about that as those detergent pack counts very minimum percentage of the gasoline in volume. Besides, the effectiveness of the detergent sometimes is not only by volume, but the material they used, many are patented. I'd more worry about the 10% or 15% content of ethanol in our gasoline, which greatly affects our gas mileage but the effectiveness of cleaning the air is still debatable.I had a similar discussion with a co-worker awhile ago and he brought this up to me:
If the gasoline has more additives and detergent in it, wouldn't it get less gas mileage since there is less gasoline per volume?
I'd not worry about that as those detergent pack counts very minimum percentage of the gasoline in volume. Besides, the effectiveness of the detergent sometimes is not only by volume, but the material they used, many are patented. I'd more worry about the 10% or 15% content of ethanol in our gasoline, which greatly affects our gas mileage but the effectiveness of cleaning the air is still debatable.
Although different brand of gas may come from the same refinery, but the detergent pack from different brands added before the gas gets shipped into gas stations is different. That's why there's a list of top tier detergent gasoline.
Another thing people should keep in mind when comparing mileage between vehicles (and from tank to tank) is the average speed readout. I haven't changed the average speed - IOW, it's now the average for all ~30,000 kms driven on the vehicle, and it sits at 40 kph (24.8 mph).
My CX-5 has a lifetime readout of 9.9 litres per 100 KM (23.76 mpg) at an average speed of 40 kph (24.8 mph).
Anyone tried ethanol free gas yet? I used it a couple times in my Subaru Impreza but didn't notice any difference.
I'd say E10 "at least" has 3% impact on gas mileage according to EPA. Many people, especially with older vehicles, typically experienced 6~10% drop or even more on gas mileage. Unfortunately I can't test it on our CX-5 as the ethanol-free gas is nowhere can be found in our area.It's at best a 3% difference between E0 and E10.
E10 has UP to 10% ethanol, and it may legally contain less (but not more), so you never know exactly how much ethanol you're getting.
At best, instead of 25MPG on E10 you would get 25.75.
It's impossible to see such a small change in MPG outside of a good controlled experiment.