I went to Wal-Mart yesterday and bought some Mobil 1 5W30. I bought a 5 qt. jug and another single quart. When I got home, I realized the 5 qt. jug says "Truck & SUV" across the bottom, and my single quart doesn't. Is this some variation of 5W30 or do they just put that on there for marketing purposes? I want to make sure I'm not putting different oil in there. Should I go back and swap it out for a jug that doesn't say Truck & SUV, or am I alright here?