good that u have done all the basic maintainence. i had a honda reborn 300k kms driven running perfectly fine on 5w-30.
just do a quick change with new oil may be at 2500 KMs after that follow 5000 KM formula
i think other things that u need to do after getting the new car get its tappets adjusted to spec (you can browse this topic-i might have mentioned the exact values above). once they open the tappet cover ensure that cover seal is replaced too and sealed with silicon as well.
Also get the alignment done.
try and find the leak.
also change the gear oil too. if its prosmatic get honda orignal ATF DW1 around 3 litres will be required.
also change to orignal honda type 2 coolant.
get brakes services and brake oil changed. if required change the brake disc pads too.
lastly its important to find the oil leak . once you do than this issue can be addressed IN SHA ALLAH