Originally Posted by J871yhk
becasue they are developing new oil all the time?
Mainly driven by Manufacturer demand... eg ll03, ll04, the vw one for diesels that I cant think of the numbers for!
incorporating the spec will mean changing the blend, which isnt that hard to do, but makes a new product, so why not sell it?
Alex
Alex,
The Edge is the Rebranded RS series, along with the old Castrol SLX 0w-30, also rebranded as edge, the new one is the Castrol SLX II which they have developed to meet all the latest manufacturer specs, mainly BMW and their particulate filters.
Also, RS 0w-40(edge) = PAO synthetic
RS 10w-60 (edge) = hydrocracked mineral.
Be careful with information.
