Local garage here does oil changes,up to 6 quarts and no name filer for 25 bucks tax included.They advertise Coastal brand oil. Aside from the low price filer, what about the oil? The bulk labeling says it's SM rated 10/30. They also offer more expensive grades of Coastal and known brand filters for more money. I use this oil change on my winter beater 4.0 Jeep, can't do it myself for that money..... You think the oil is adequate for more than an old clunker?