I'm trying to select an engine oil for my xtreme
1.Valvoline champ 4T (synthetic blend)
2.Castrol power 1 (part synthetic)
3.gulf pride 4T plus (synthetic blend)
4.elf moto 4 fuel eco (mineral oil i think)
5.shell advance AX5(mineral oil)
All of there are of 10w30 grade and all cost under 300. The dealer was suggesting Valvoline as the best. I don't want to change grade and what is the difference between part synthetic and synthetic blend?
Only these are available at my place except HH,mak and servo which i don't want to use.



I had the same problem before,now i shifted back to stock air filter in my karizma.
.realised it only on the road.
.

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