Mercury 2005 Mountaineer Owner's Manual page 191

Tires, Wheels and Loading
• Refer to the instructions included with towing accessories for the
proper installation and adjustment specifications.
Do not exceed the maximum loads listed on the Safety Compliance
Certification label. For load specification terms found on the label, refer
to Vehicle loading in this chapter when figuring the total weight of your
vehicle.
Note: 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 vehicle
control, vehicle rollover and personal injury.
GCWR (Gross Combined Weight Rating)/Trailer Weight
Engine Rear axle ratio
4.0L SOHC 3.55
towing
4.6L* Class II 3.55
towing
4.0L SOHC Class 3.73 LS
III/IV Towing
4.6L* Class III/IV 3.73/3.73 LS
Towing
Notes: - For high altitude operation, reduce GCW by 2% per 1,000 ft. (300
meters) elevation. For definitions of terms used in this table and
instructions on how to calculate your vehicle 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.
*-When towing maximum loads under high outside temperatures and on
steep grades, the A/C system may cycle on and off to protect the engine
from overheating. This may result in a temporary increase of interior
temperatures.
Towing a trailer over 3,500 lb. (1,588 kg.) requires a weight distributing
hitch.
190
2005 Mountaineer (mnt)
Owners Guide (post-2002-fmt)
USA (fus)
4x2
Maximum Trailer weight
GCWR-lb. (kg) range-lb. (kg)
(0-Maximum)
7700 (3493) 0–3140 (0–1424)
7700 (3493 0–3160 (0–1433)
10240 (4645) 0–5660 (0–2567)
11600 (5262) 0–7040 (0–3193)