![]() But most require a scan tool to set the fluid level to spec. Not following procedure could result in fluid being low or wrong level, because temperature does affect fluid level at normal operating condition. The fluid can be changed on most transmissions whether they are sealed or not. Could not find anything on other year models. This is for 20 since they were some of the first sealed. If fluid level is not checked at normal operating temp, there is a possibility of transmission damage over time. Shift thru all gears once or twice, low to high, insuring the fluid drains into all gears and parts, put back in park, chock wheels, crawl under truck, useing check and fill plugs, add oil while idling and normal operating temp. The fluid can be changed cold, but the correct procedure is, after changing fluid, to warm the truck to normal operating temp, using engine gauge on dash (115 - 130 degrees) to check the level. It was later discovered that at 60,000 miles, the pressure and temp additives, not the fluid, began breaking down. Truck owners who do frequent towing, or constant stop/start city drivers need to move this interval into the 20-25,000 range. The confusion came because the WS (World Standard) oil was suppose to be good for the life of the transmission. Even in a sealed transmission, the fluid can degrade over time which can cause catastrophic damage to your vehicle. A common, one-size-fits-all recommendation for when to change your transmission fluid is every 30,000-40,000 miles, or 5 years, based on normal, everyday driving. Think it would be ok to just drain and fill the transmission?Īccording to information I have put together from internet, the 2005 Tundra was one of the first to have a sealed automatic. I do not pull with it, never drive over 60 MPH. ![]() Lucky I caught it, or it might have ruined my transmission, since there is no dipstick to monitor fill level. Last time I had it flushed, evidently the pressure did something, because it caused the seal at the bell housing to start oozing transmission fluid. Another dealer says if it does not have the tow package (mine does not), just change it only, but do not flush. Another dealer said to flush and change it to the tune of $250 + tax. Do not change it since it is a sealed transmission. When fluid is drained by simply removing the drain plug, a considerable amount of oil is retained in the transmission including the torque converter, which is. One toyota dealer told me to leave it alone. I called Toyota Company and they verified the new change policy. My manual says to never change the fluid, but the dealer told me Toyota Company changed their opinion and now requires the fluid to be changed every 60,000 miles. ![]() The Toyota dealer changed and flushed my transmission fluid at 83,000 miles in my 2006 Tundra.
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