Edwin,
To dispute your point, I just checked my manual and due to "severe conditionons", the manual recommends relacing the fluid every 30k miles. Details below:
Maintenance Item Operation Interval Driving Condition AUTOMATIC TRANSAXLE FLUID Replace EVERY 30,000 MILES (48,000 KM) A, C, E, F, G, H, I
SEVERE DRIVING CONDITIONS-
A - Repeatedly driving short distance of less than 5miles (8km) in normal
temperature or less than 10miles (16km) in freezing temperature
B - Extensive engine idling or low speed driving for long distances
C - Driving on rough, dusty, muddy, unpaved, graveled or salt- spread roads
D - Driving in areas using salt or other corrosive materials or in very cold weather
E - Driving in sandy areas
F - Driving in heavy traffic area over 90°F (32°C)
G - Driving on uphill, downhill, or mountain road
H - Towing a Trailer, or using a camper, or roof rack
I - Driving as a patrol car, taxi, other commercial use or vehicle towing
J - Driving over 100 MPH (170 Km/h)
K - Frequently driving in stop-and-go conditions
I happen to fall into the C, E, and F categories. Huyndai engineers wrote this thing. Cheap insurance in exchange for a new transmission post-warranty. In addition, all of my vehicle maintenance are deductions...
My dealer isn't out to get me, they saved me $600 by bringing in a paintless dent removal guy to fix some jerk's failed attempt to control his door in the wind. Cost- $0.
My $25 oil change comes with a free wash and includes Castrol GTX 10-30W. If it's going to be over an hour, I get a loaner to take care of errands while waiting. Some dealers actually care! What brand of oil are you getting? I bet it's not Castrol. May the "P" stuff?
Steve