Gonna do an oil change on the TN
Just wondering how many litres of oil does it take?
And what sort of oil is recommended? Viscosity wise

The engine has 290,000km on it, but starts fine without issues and runs smooth

i use 10w-40 with no problems. for a motor that age... perhaps 20w-50 or 20w-60... penrite is good ****

Why do I need to change that often?
I was planning every 7500km
And that way at 15,000km I'd do a "major" service including plugs and air filter.
I'll do fuel filter now as well

So 20-50/60 is the go?

Service intervals on 1st gen is 10,000km & major service every 20,000km (incl tranny).

I did my own oil & filter every 5,000.
AstronII holds about 4L in the sump & filter.

My TP with 264000K's does its own oil change every time I drive it.