I'm not an insider on this stuff... but MAVTv is obviously a Lucas Oil Product. USAC is an Amsoil sponsored entity. WoO got a new oil sponsor this year, but there's obviously competition between Lucas and WoO on the late model side of things. All Stars obviously are Mobil1, but in the promos and shows I haven't seen a lot of Mobil1, so I'd guess they kind of got Mobil 1's blessing since that's probably more of NASCAR focused sponsorship than anything. Just guessing here... which is dangerous.
All about Lucas Oil. That's really all there is to it. And for those with dish who want Mav, grab a firestick and get a cheap IPTV. I pay $8 a mo the for more than you'll ever get with Dish, cable, etc..