Ca doit etre à peine 5 L en changeant le filtre a huile. Tu as peut etre le fond de carter rempli de boue d huile.
According to our sources, oil, coolant and fuel capacity for this version of 1963 Buick Riviera 401 V-8 are as follows:
Engine lubricant oil capacity:
3.8 liter / 4 U.S. qt / 3.3 imp. qt
plus 0.9 liter / 1 qt for filter change
Engine coolant capacity:
17.5 liter / 18.5 U.S. qt / 15.4 imp. qt
Fuel tank capacity:
76 liter / 20.1 U.S. gal / 16.7 imp. gal
Battery capacity (Ah):
70