L 555 Deluxe questions

[deaop06]

I have aquired a L 555 with a Kubota engine. Some questions I have are related to fuel. Machine set for 3-4 years. It has 24xx showing on a working hour meter. I would like to know if I should add an additive to the tank. It started up and run fine no smoke everything works for now. There is not much fuel in tank. Should I just add fuel and not worry about adding anything? I am going to change every filter and all fluids before I run it hard. We only only run it to load and unload. Anyone have any suggestions how to get this fuel questions answered? Also the serial # is 7438xx. Any idea about year made? Thanks in advance. Ron

 

[Ivan]

I would get some biocide and dump in the tank then fill it and run it