Just wanna know if it’s better to fill up with mid grade or premium unleaded gasoline on an Optima 2020 SE LX.
Now we've jumped from changing oil every 3,000 miles to using premium fuel and draining the line before filling, another rediculous post.These GDI / TGDI engines will stay cleaner using non-ethanol 93 octane. Very few gas stations sell non-ethanol 87 octane here in Michigan these days. I think Shell might be the only one. It's almost impossible to know, because our laws don't mandate gasoline fuel stations put 10% ethanol stickers on pump handles anymore.
My two engines run better on 93 octane, but it's expensive to run. Premium here averages 70 cents per gallon more than 87 octane. So every tankful is roughly $11-12 more out of our wallet.
Let us know if it pays off, running 93 octane exclusively for 150K. That's the only way to find out. I use mid-grade 89 octane in my Hyundai GDI and 87 octane in our Kia MPI.
4-5 times per year I fill my plastic garage gasoline container for things like lawnmowers and snowblowers. These are the only times I use 93 Premium in my vehicles.
Never fill the garage gasoline container first when arriving at the pump. Most hoses hold a half-gallon of fuel. So if you want Premium for your lawnmower, pump your vehicle first with Premium - then pump Premium "last" into your gallon container. That's because 90% of gas purchases are 87 octane or less and that's what's usually in reserve in that long hose.
Nothing ridiculous (correct spelling) about taking care of our vehicles properly.Now we've jumped from changing oil every 3,000 miles to using premium fuel and draining the line before filling, another rediculous post.
Just thought I'd recant by original post as in retrospect, probably too harsh, so let's just say I think his posts are ill advised and not in the best interest of the community.Nothing ridiculous (correct spelling) about taking care of our vehicles properly.
BTW..... If you need Premium fuel and instead fill your gallon container half-full with 87 octane instead of 93 octane because you were too shallow-minded to realize the hose and line prior to it holds a half-gallon of regular gas, well that's on your lack of brainpower, as what's custom with most of your posts lately.
My best M.O. today is to put the ill-informed like you On Ignore. Bye.
I see my initial post only contains the hose reference. There is more gasoline in storage from the previous pump user. There's gasoline between the underground tank and the hose that's pulled when the previous user begins his squeeze of his pump trigger. So that fuel line between the underground tank and hose also holds fuel. So that brings it to / near the half-gallon mark I mentioned earlier.According to the American Petroleum Institute the gas-pump hose typically retains about one third of a gallon of fuel, not 1/2 a gallon.
Yes, the engine in the Optima (not sure if it's all years or some) will give more power with higher octane:Yes, I agree on these points you make. The higher prices for premium fuel does not buy any advantages,unless the auto manufacturers have a system to improve MPG with octane changes.