The 4.3 engine requires 8.5 quarts of Synthetic oil.
It holds 5.1 quarts.
Oil capacity for your 1999 Saturn DOHC 4-cylinder motor is 4 Quarts of oil
6
4.5 Quarts of oil.
5 quarts 5W30
2
( 5 quarts with filter change ) according to the 1999 Mercury Grand Marquis owners manual
with a 5.3 motor 6 and 1/2 quarts
A 1999 Mercedes E320 takes 8.5 quarts of oil. The oil in the vehicle should be changed every three months.
Four cylinder needs five quarts, six cylinder needs six quarts.
If it has a 3800 Series II motor, the capacity is 4.6 US Quarts. If it has the 3.5 'Shortstar' motor, then it will usually take 6.0 quarts (Including a filter change in both cases)
6.0 quarts with engine oil filter change , according to the Owner Guide