STP motor oil may not have the reputation of ... a clean and reliable full synthetic oil that can be used in both diesel and gasoline engines. Customers frequently bring their own cases of the ...

Expensive synthetic oils worked no better than conventional ... Additives such as Slick 50, STP Engine Treatment and STP Oil Treatment showed no significant reduction in friction and engine ...

Assurance Intl Limited highlights its commitment to high performance through proprietary synthetic base oil technology and new ... are launching a new range of STP lubricants, oils, filters ...