If it is the conventional oil it REALLY does NOT matter who makes it. Most conventional motor oils are the same. With conventional motor oil just use the recomended viscosity and change it often.
It is a combination of synthetic oil and conventional oil.
Yes, and you can even mix them together.
No, you can even mix synthetic with conventional oil. It will do no harm at all.
Yes, you can mix conventional oil with synthetic oil with no problem.
Yes, just make sure the weights are the same so it will be compatible with your vehicle.
Yes, anything mid 80's and up can be switched between conventional oil and synthetic oil. Anything older (that was around when zinc was found in oil, or when cork gaskets were used) should stick to conventional oil. It's actually federally mandated that conventional and synthetic oils be interchangable.
All major brands of motor oil are manufactured to the same standards. To pick a best if impossible. But saying that Synthetic is superior to conventional oil.
5w30. It can be synthetic, conventional, or a blend.
The 2.4L uses 5W30 conventional.
Yes, or you can mix them. Just bear in mind that if you mix them, you must maintain as if it were straight conventional oil and that by mixing, you lose pretty much all of the benefits that synthetic oil has.
5W30. It can be synthetic or conventional.