Originally Posted by mdosu
do you show a record that TWS Motorsport (p/n 07510009420) has been superceded by "Edge Professional" (p/n 83122219730) in your system?
The word "professional" is added to show OEM/workshop product and the colour pigmentation is different from the retail Castrol oil to differentiate between the two. It's the same oil and when you check the specs at the back of the can. This is my take.