Are 'approved' lubricants a technical necessity, or is the customer just paying for the name? By Simon Michell
Valvoline
Valvoline Global Products sold for $2.65bn
Oil major Saudi Aramco buys lube division in order that Valvoline Inc can concentrate on service side of the business
DON'T STRESS WHEN IT COMES TO OIL SPECS
Some words of advice to avoid costly mistakes when choosing motor oil