Mercury 1999 Mountaineer Owner's Manual page 164

Driving
GCWR (Gross Combined Weight Rating)/Trailer Weights
Rear
Engine axle
ratio
4.0L
3.55
SOHC
4.0L
3.73
SOHC
5.0L 3.73
Trailer towing table (4x4 and AWD automatic transmission)
4.0L
3.55
SOHC
4.0L
3.73
SOHC
5.0L 3.73
Notes: For high altitude operation, reduce GCW by 2% per 300 meters
(1 000 ft) elevation. For definition of terms and instructions on
calculating your vehicle's load, refer to Vehicle loading in this chapter.
Maximum trailer weights shown. The combined weight of the
completed towing vehicle and the loaded trailer must not exceed the
GCWR.
Towing a trailer over 1 588kg (3 500 lbs.) requires a weight distributing
hitch.
Do not exceed the GVWR or the GAWR specified on the Safety
Compliance Certification Label.
Towing trailers beyond the maximum recommended gross trailer
weight exceeds the limit of the vehicle and could result in
engine damage, transmission damage, structural damage, loss of
control, and personal injury.
164
Trailer towing table (4x2)
Trailer Weight
Maximum
Range-kg
GCWR-kg
(lbs.)
(lbs.)
0-Maximum
4 082 0-2 041
(9 000) (0-4 500)
4 535 0-2 649
(10 000) (0-5 840)
4 990 0-3 030
(11 000) (0-6 680)
4 082 0-2 041
(9 000) (0-4 500)
4 535 0-2 540
(10 000) (0-5 600)
4 990 0-2 921
(11 000) (0-6 440)
Maximum
frontal area of
2 2
trailer-m (ft )
4.64 (50)
4.64 (50)
4.64 (50)
4.64 (50)
4.64 (50)
4.64 (50)