Both hands up for any good syntetic oil. I´m running Mobil 1(Formula 1 sponser). Some really hard core Escort people like Valvoline(Ford Rally sponsor). Others Castrol(Used to be Toyota Rally sponsor) . All those brand are tested for ages and they are good. Add-ons. There are many of them too. Look for ones that making protecting coating. I used Slick50. I ´m not sure what brands are in SA!