Yes I replaced my Mobile oil 5w30 with Castrol 5w30 dino stuff, nothing fancy ...The old lead slid 2005LaSabre is doing fine...no change in engine noise, but was always quiet ....no ticks, and yes I let walmart do it plus rotate the tires. I will miss Cookeville tn where things were much slower and folks were not in a huge hurry....Chattanooga is a rat race, but I grew up here...its like Chicago at 3pm most of the time....life goes on...PS, we do not have to cross the river to shop and so on,,,well thats a good thing..imho. At 70 years young,,well driveway macho maintenance is a thing of the past for me....