I have a 2005 C230 sedan and was wondering if it requires a flush of the trannie fluid? It has 117,000 miles and runs well but I see advertisements that say it is needed for my car type with the age of the car but I have also heard that its not necessary for my car since it has synthetic trans fluid. I need an unbiased opinion.
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Always flush is best. Just draining removes only 15-25% ( depending on transmission ) of your fluid leaving up to 85% old & dirty fluid to contaminate the clean. Flushing forces fresh fluid into all parts until the fluid flows out clean.
Yes a tranny flush would be great. I would recommend Either Going out and purchasing a new tranny filter, gasket and Transmission fluid from your local Auto parts store and doing it yourself, CHEAPEST. Or going to your local Valvoline to have it flushed. Cost is around $100
Yes, it's true that you want to flush the system after that many miles. Most of the time, a full flush won't cost more than 250 - 300 dollars. The only reason it costs that much is for the replacement fluids and labor. You don't need to replace the hoses unless they look bad. While you are there you might as well get the serpentine belt replaced as well.
gm coolant requires replacement at 5yrs/100,000 miles. rec having cooling system flushed. other then that a general inspection should be all thats required at this interval inspection should include brake linings, fluid lvls, air filter, tires, fluid leaks ect. although there may not be manufacturer requirements for transmission fluid and filter change may want to consider having it done, also fuel system service with injector flush is very benificial to fuel mileage and restoring engine power. gm does NOT ever recommend engine crankcase flushes that some service shops sell. spark plugs in these engines do not require replacing until 100k miles unless causing engine to run rough
Transmission problems in the RX300 are common for those who never flush the transmission fluid. I would strongly urge you to quit driving your RX300 and get it to a dealership where they can flush the transmission fluid. There is no transmission fluid filter (per say) but there is a "screen" inside the transmission that needs to be flushed out (this serves as the filter). Pull out your dipstick for the transmission and smell the transmission fluid - does it smell burned? I hope not, but regardless, take it to a dealership and get the tranny flushed and see if that makes a difference. Also, continue to flush the transmission every 60,000 miles at most! Lexus says that you do not need to flush the transmission, but I think you do. I have a 2001 Lexus RX300 and I have had no problems with the tranny and I've flushed it at 60,000 miles and then again at 115,000 miles. I now have just a little over 120,000 on it. It's a good running vehicle but you need to care for it!
The cleaning is by flushing. DO NOT LET THEM FLUSH YOUR TRANNY! It will do nothing but damage the tranny.
For as fluid. the 3.2 quarts is if you dont drain the torque converter. If you drain the converter then it will take about 14 to 16 quarts.
The reason i say do not let them flush the tranny is because they force the fluid backwards through the system and that will damage it. Also if the tranny is almost on its last "leg" and you may not know it. Then all that will do is speed the process up.