thanks buddy for the info and due to unavailability of petronas in kolkata i switched to Castrol Power 1 (15w40semi synth) and man result is really good moreover the mech also said me that the result of rower 1 racing is not good just like motul 300v 10w40 fs so better to switch with power 1 but after power 1 why again back to mineral oil ??


and i used this synth oil in extreme condition like 42c+ temp and most of the time was riding above 7.5-8k RPM (104-109kmph) and after using synth oil(2cans) (for 7.5k kms) i again switch back to mineral .
Is there something wrong in my bike or is it normal? 




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