According to the 2002 Mercury Sable Owner Guide :
With engine oil filter change :
( the 3.0 litre " Vulcan " V6 engine , and it's flex fuel version , take 4.5 U.S.
quarts of 5W-20 engine oil )
( the 3.0 litre " Duratec " V6 engine takes 5.5 U.S. quarts of 5W-20 engine oil )
V6 holds 4.5 quarts V8 holds 5 quarts V10 holds 7 quarts Diesel holds 12 quarts
3.9L holds 4.5 quarts 5.2/5.9L holds 5 quarts 8.0L holds 7 quarts Diesel holds 12 quarts
V6 holds 4.5 quarts V8 holds 5 quarts V10 holds 7 quarts Diesel holds 12 quarts
The 4.0L holds 6 quarts of 10w30The 4.7L holds 6 quarts of 5w30The 4.0L holds 6 quarts of 10w30The 4.7L holds 6 quarts of 5w30
V8 holds 5 to 6 quarts V10 holds 7 quarts Diesel holds 12 quarts
Down the same tube that holds trans dipstick. Use a trans funnel, long, flexible and correct size.
3.9L holds 4.5 quarts 5.2L holds 5 quarts 4.7L holds 6 quarts
V8 holds 5 quarts V10 holds 7 quarts Diesel holds 12 quarts
3.9L holds 4.5 quarts 5.2L and 5.9L hold 5 quarts 8.0L holds 7 quarts Diesel holds 12 quarts
4.7L holds 6 quarts 5.7L holds 7 quarts
You need to remove the serpentine belt and alternator in order to get the crank sensor; one 10mm bolt holds it. It is easy to replace.
4 cylinder holds 5 quarts. 6 cylinder holds 6 quarts. V8 holds 5 quarts.