2. Each time you fill the tank, record the amount of fuel added (in
gallons or liters).
3. After at least three to five tank fill-ups, fill the fuel tank and record
the current odometer reading.
4. Subtract your initial odometer reading from the current odometer
reading.
5. Follow one of the simple calculations in order to determine fuel
economy:
Calculation 1:Divide total miles traveled by total gallons used.
Calculation 2:Multiply liters used by 100, then divide by total
kilometers traveled.
Keep a record for at least one month and record the type of driving (city
or highway). This will provide an accurate estimate of the vehicle’s fuel
economy under current driving conditions. Additionally, keeping records
during summer and winter will show how temperature impacts fuel
economy. In general, very hot or very cold temperatures give lower fuel
economy.
Driving style — good driving and fuel economy habits
Since it is able to operate in electric mode and to collect braking energy,
your hybrid vehicle will get better fuel economy in city driving than on
the highway. This is contrary to conventional vehicles. However, many of
the same actions that improve fuel economy in a conventional vehicle
will also improve fuel economy in this vehicle.
Give consideration to the lists that follow and you may be able to
improve your fuel economy.
Habits
•Avoid aggressive driving. Quick acceleration and deceleration decrease
fuel economy.
•Drive at a smooth, constant speed. Excessive variation in pedal input
causes more operating mode changes and reduces efficiency.
•Drive at reasonable speeds. Traveling at 60 mph [96 km/h] uses
approximately 20% less fuel than traveling at 70 mph [112 km/h]).
•Minimize A/C and defroster usage. Selecting defrost, or defrost/floor
mode on the climate control system will force the engine to run
continuously, which reduces fuel economy. Selecting AUTO will
typically force the engine to run continuously, unless ECON is
selected.
2008 Mariner Hybrid(mhv)
Owners Guide (post-2002-fmt)
USA(fus)
Maintenance and Specifications
273
Item CapacityFord Part Name or
equivalentFord Part Number /
Ford Specification
Automatic eCVT
transaxle fluid5.3 quarts (5.0L)
3
Motorcraft MERCONV
AT F
4
XT-5-QM /
MERCONV
Rear axle fluid (4WD) 2.96 pints (1.4L)
5
Motorcraft SAE 80W-90
Premium Rear Axle
Lubricant
6
XY-80W90-QL /
WSP-M2C197-A
Power Transfer Unit
fluid (4WD)
7
12 ounces (0.35L)Motorcraft SAE 75W-140
Rear Axle LubricantXY-75W140-QL /
WSL-M2C192-A
Windshield washer fluid 2.7 quarts (2.6L)Motorcraft Premium
Windshield Washer
ConcentrateZC-32-A /
WSB-M8B16-A2
Fuel tank 15 gallons (56.8L) — —
1Add the coolant type originally equipped in your vehicle. Refer toAdding engine coolantin this
chapter.2Use of synthetic or synthetic blend motor oil is not mandatory. Engine oil need only meet the
requirements of Ford specification WSS-M2C930-A and the API Certification mark.3Indicates only approximate dry-fill capacity.4Using any transmission fluid other than those that meet the recommended specification may cause
internal transaxle damage. Do not use Motorcraft MERCONCVT (blue) ATF. This vehicle uses
only Motorcraft MERCONVATF5Fill to 1/4 inch to 9/16 inch (6 mm to 14 mm) below bottom of fill hole.64WD vehicles exposed for prolonged periods to temperatures less than -40° C (-40° F) should
change out the rear axle fluid to Motorcraft SAE 75W-140 Rear Axle Lubricant, Ford part number
XY-75W140-QL meeting Ford specification WSL-M2C192-A.7The Power Transfer Unit is lubricated for life with synthetic lube. Lubricant levels are not to be
checked or changed unless a leak is suspected or repair required. Replace Power Transfer Unit
lubricant with specified synthetic lubricant anytime the unit is submerged in water.
2008 Mariner Hybrid(mhv)
Owners Guide (post-2002-fmt)
USA(fus)
Maintenance and Specifications
286
