I came here with an oil burning Saturn, and when I sold it had 5 gallons of Chevron Supreme 10w-30 left over. Was not planing on using it on the Elantra, but after research here and reading very informative posts by an Australian Hyundai owner I changed my mind. In that part of the world 10w-30 is the recommended oil.
So my fears are I would create an oil burning car like my Saturn. The other concern is reduced fuel economy. I am on a budget and was not sure how the mileage would work out.
I am happy to say my highway fuel mileage increased. Last trip out of town readout said 48.2 mpg when I arrived at my destination. Better than FF, Valvoline 5w-30, PP 5w-30 and PUP 5w-20. My mileage average is up over all other oils. I have not ever needed to add oil.
Perhaps the car is breaking in. Maybe it is my driving skill.
Regarding making a sludged motor I am following with 3,750 mile oil change recommendation from Hyundai while I am under warranty. Next change with be PP 5w-30. So winter I will be using my synthetic oil supply. But the Chevron is doing very well in the car. It looks like on this motor (2.0 Atkinson) what oil I use will not matter much. This motor likes them all. In my experience it likes the 10w-30 a little better.
So my fears are I would create an oil burning car like my Saturn. The other concern is reduced fuel economy. I am on a budget and was not sure how the mileage would work out.
I am happy to say my highway fuel mileage increased. Last trip out of town readout said 48.2 mpg when I arrived at my destination. Better than FF, Valvoline 5w-30, PP 5w-30 and PUP 5w-20. My mileage average is up over all other oils. I have not ever needed to add oil.
Perhaps the car is breaking in. Maybe it is my driving skill.
Regarding making a sludged motor I am following with 3,750 mile oil change recommendation from Hyundai while I am under warranty. Next change with be PP 5w-30. So winter I will be using my synthetic oil supply. But the Chevron is doing very well in the car. It looks like on this motor (2.0 Atkinson) what oil I use will not matter much. This motor likes them all. In my experience it likes the 10w-30 a little better.