The 3.8-liter Buick LeSabre typically requires about 5 quarts of oil when using a standard oil filter. If you are changing the oil filter as well, it's a good idea to have a little extra oil on hand, just in case. Always refer to the owner's manual for the most accurate specifications related to your specific model year.
A 1995 Buick LeSabre takes 7.4 quarts of transmission fluid. Dextron lll transmission fluid is recommended for use in the Buick LeSabre.
around 5
4 quarts
4.5 leaders
11-12 on an overhaul 5-6 on a service
Two
The 2001 Buick LeSabre's fuel tank holds 18.5 gallons as found on http://consumerguideauto.howstuffworks.com/2001-buick-lesabre-3.htm
20
4
three
17
40000