RAM 2021 CHASSIS CAB User Manual

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SERVICING AND MAINTENANCE 389

7. Remove the dipstick again and note the

fluid level on both sides. The fluid level

reading is only valid if there is a solid

coating of oil on both sides of the dipstick.

Note that the holes in the dipstick will be full

of fluid if the actual level is at or above the

hole. The fluid level should be between the

“HOT” (upper) reference holes on the

dipstick at normal operating temperature.

If the fluid level is low, add fluid through the

dipstick tube to bring it to the proper level.

Do not overfill. Use ONLY the specified fluid

Ú page 444. After adding any quantity of oil

through the dipstick tube, wait a minimum

of two minutes for the oil to fully drain into

the transmission before rechecking the

fluid level.

NOTE:

If it is necessary to check the transmission below

the operating temperature, the fluid level should be

between the two “COLD” (lower) holes on the

dipstick with the fluid at 60-70°F / 16-21°C. Only

use the COLD region of the dipstick as a rough refer-

ence when setting the fluid level after a transmis-

sion service or fluid change. Re-check the fluid level,

and adjust as required, once the transmission

reaches normal operating temperature.

8. Reinsert the dipstick. Check for leaks.

Release the parking brake.

NOTE:

If it is necessary to check the transmission below

the operating temperature, the fluid level should be

between the two COLD (lower) holes on the dipstick

with the fluid at 68-86°F / 20-30°C. Only use the

COLD region of the dipstick as a rough reference

when setting the fluid level after a transmission

service or fluid change. Re-check the fluid level, and

adjust as required, once the transmission reaches

normal operating temperature.

Fluid And Filter Changes — Eight-Speed

Transmission

Under normal operating conditions, the fluid

installed at the factory will provide satisfactory

lubrication for the life of the vehicle.

Routine fluid and filter changes are not required.

However, change the fluid and filter if the fluid

becomes contaminated (with water, etc.), or if the

transmission is disassembled for any reason.

Fluid And Filter Changes — Six Speed

Transmission

For the proper maintenance intervals

Ú page 354.

In addition, change the fluid and filters if the

fluid becomes contaminated (with water, etc.),

or if the transmission is disassembled for any

reason.

CAUTION!

If the fluid temperature is below 50°F (10°C)

it may not register on the dipstick. Do not add

fluid until the temperature is elevated enough

to produce an accurate reading. Run the

engine at idle, in PARK, to warm the fluid.