Originally Posted By: discobiscuit
I only use Mobil 1 in my cars. I'm wondering what the difference in Mobil 1 and Wal-Mart oil is. The wal-mart oil has the approval seal on the bottle so is it the same as Mobil 1?
First off, welcome to the forum!
Second, can you give us some more information here? What grade are you considering (5w30, 10w30, etc)? What is the vehicle involved? If by "approval seal" you mean the API approval, yes, both Mobil 1 and Walmart Super Tech have this; this is a standard industry specification. Both will provide a basic level of protection, but Mobil 1 offers improved performance in a number of areas compared with Super Tech, conventional or synthetic.