done a few things to alto vxr 2012
engine oil changed from ZIC A 10w 40 to ZIC A+ 5W 30
tappets ,tunning, nut bolts and new filters
new lather washels at drain nut
Result
its alive even on AC and CNG it burns rubber
its smoother now runs well and noise is less
cabiin is quet as F10A sounds like a crying donkey