Originally Posted by oilman
Yes, it's the same oil.
Use a synthetic like Silkolene or Motul, it's a better oil for the same money. I have RS 10w-60 on the shelf if you insist.
Cheers
Simon
Ok, be honest here... its not the same oil!
take for example the 0w40s.....
Castrol RS has a API of sl/cf where as the new Edge sport evqilient is sm/cf
Castrol RS is a synthetic oil as well... I'm not saying its better, but you need to be careful with information!
Alex