First thing to do....change all the lube

EO

Castrol Power-1 - cheap but very good... up to u if u wanna use the semi syn or fully syn.. change every 5k km (oil filter change at the same time as well)

chain lube... up to u which u wanna use but i like WD-40 Specialist chain lube... can be had at hardware stores or u can buy from shoppee or lazada. lube the chain every 4-500km or once every 1-2 weeks or every full tank of fuel (if u the kind that fill up full every fill up)
recommend to change the spark plug and air filter and oil filter now so u know the age n conditions of these critical parts.

Depends on ur usage...5k is safe enough if ur using semi or fully syn

Mineral oil recommended at 3k...but if u wanna do 1-2k change then i suggest using the cheapest oil

Please just skip semi synthetics.

Here's a list of recommended EO for bikes: Oil list, including HDEO (diesel oils)

And this list compiled for FZ:
Click each EO to open spoiler

any pic TS? sharing is caring

TS don't have bike lesen yet?

welcome to bike world, haha