Every engine requires oil to function, though oil itself has changed a lot over the decades. It's no longer a bad idea to use ...

Suitable for watercolour, acrylic, oil, gouache and tempera painting, this set includes synthetic taklon brushes in liner 3/0, round size 1, filbert size 2, round size 3 and 6, filbert size 4 and ...

Modern synthetic oils last an incredibly long time. Thanks to all the detergents, additives, and other concoctions in them, these oils might be good for anywhere from 7,500 miles to 15,000 miles.