Never heard of Totachi.
If your engine is not in bad shape, then stick to 0w20, fully synthetic API SN oil. It can be any major brand, like Total, ZIC, Shell, Kixx, LM, Toyota.
Just make sure it is the genuine dabba. The easiest to find genuine 0w20 is from official Total pumps. Or Shell. Or ZIC online shop, or even KIXX. Another option is get genuine Toyota fully synthetic 0w20 from dealership, not sure if they have it though.
No need to go for Mobil1 or LM. They are expensive and will not provide any added benefit.
Can drain these oils at 5 to 8,000 KM. Depends. If you don't drive much, some oils last for 6 months, some for 1 year.
Some oils are long drain intervals, like AMSOIL 0w20 - it's the best oil in the world, US made. You can run it for 25,000 MILES (not km) OR 1 year. In our conditions some say you should change it after 15,000 KM.. but that seems too early to me.
You just have to change filter for AMSOIL at 5-10,000 KM.
In short, don't make it complicated. Get 0w20 from well-known brands easily available locally. Toyota, Total, Shell, Kixx, ZIC.
