today I did my oil and oil filter change on the GRiSO 1100.
What I noticed: I filled 3 liters ... on the dipstick is almost 3/4 vol ... even after a test drive afterwards ... the dipstick remains almost full hung up ...
How much oil the engine will tolerate depends on a number of factors but I can guarantee you that if you try to keep it 'Full' you will end up regretting it.