Bhai jaan when i discussed about this topic with my bro he replied..
Rakhi wi to CD-100 hai magar sochtay aur treat kartay ho Jaisay supersports hai..
The fact is synthetic oils are superior in every aspect from minerals..They are chemically synthesized and are different from minerals which are extracted from crude oil and refined..Pure and simple they have better chemical-bonding and are better in lubrication..Also unlike minerals they have additives which prevent sludge from depositing over seals/engine compartment.As older engines have deposits already which also serve as a piston sealant using synthetic in old engines clears out those deposits resulting on leakage of seals and loss in engine power..
Till now i havent found out any fully synthetic oil which is api sj or greater and is jaso ma certified..I myself am in search of a good synth oil..
Btw where can i fetch AX-7 genuine from rwp/isb..