Should i flush my transmission or just change it? 54k miles.Help!?
I went and got a oil change yesterday and the guy at jiffy lubs said my transmission fluid is bad and needs to be flushed. I went and checked it myself and it is a very dark brown. I did some research and from what i read everyone says not to flush to just put new fluid in and change the filter. They say that flushing can make more issues with the transmission.So now im confused. I got the car used so im not sure about previous maintenance on the car.I do get the oil changed every 5k. Should i get the flush or just change the fluid and filter and forget the flush. Its a mazda 3 2010. 54 thousand miles. Please help
Cars & Trucks - Mazda - 3 - 2010 Mazda 3 2.0
Answers & Comments
Trans fluid is changed at mileage intervals, and near the end, it looks like you describe.
You want to do both: flush and filter. The filter and the pan hold the real contaminants, so those get changed and cleaned...but then you're left with a giant amount of fluids in the system. Torque converter, piping, cooler, piping...the amount is not insignificant.
So, you get a clean filter and pan cleaned and reinstalled, the next thing is the flush. The t-teck machine is my fav, what it does is has a ful reservoir of clean and new fluid, and an empty container.....They run the car, allow fluid to pump out, and new fluid to go in....This keeps up until the fluid coming out of the trans system is clean.
It really is the best way, I think. The lube shops are the place to get it done, as this job is leak prone, messy and generates lots of fluid to be disposed of.
Neither of these processes should be able to cause damage. Sometimes the trans pan leaks, so get it attended to...not a big deal.