For your vehicle you need a 10/40 engine oil to API rating SE or higher, the API rating is the best rating for oil due to its universal acceptance worldwide.

API is the American Petroleum Institute, and the rating is SE, this was followed by SF, SG, SH, and so on, so look at the cheaper oils and find the API rating on the back of the can and as long as it is SE or above it is suitable.

Wynns is perfectly suitable, but if you can find the Miles treatment, this is better, and often the same price.

Change your oil at 3000 mile intervals, and the oil filter every 6000 miles; do not buy the so called super high performance super state of the art synthetic oils as they are no more than a waste of money in your engine, besides, it was not designed to run on them; now you know what to look for, you can buy the cheaper oils which are perfectly suitable for your engine.