Almost every car manufacturer recommends against using transmission flushing chemicals, and most will void your transmission warranty if they can prove these chemicals are being used. These chemicals can damage your transmission, which is why most automakers recommend against them.
Why You Should Never flush your transmission fluid?
Transmission fluid is highly detergent which can wash the varnish off clutches, causing it to slip. Pressure flushing can cause aging seals to start leaking. When it leaks more than a quart it could burn up the unit.
Is it good to change transmission fluid on high mileage?
Changing the transmission fluid on a high-mileage car is risky. Don't do it unless your transmission is running fine and the fluid is first-rate, because it can make transmission failure imminent.Mar 12, 2000
Can changing transmission fluid fix problems?
If you catch a shifting issue very early, a transmission fluid flush can sometimes fix shifting issues. The fresh fluid helps clutch discs and steel discs bond and hold without slipping. The seal conditioners in the new fluid help soften the clutch piston lip seals so they seal better.Oct 27, 2017
Does flushing a transmission cause problems?
Just as a reality check: flushing the transmission fluid won't fix existing problems with the transmission. If you notice symptoms like erratic shifting or grinding noises, your transmission may already be damaged, and while flushing the fluid might delay transmission failure, it won't prevent it.
Should you flush or change transmission fluid?
Transmission flushes are recommended every 45,000 miles or 3 years in place of a drain and fill or to replace fluid changes altogether. ... With a flush, all old fluid is removed with a flush machine and then new fluid is added, allowing the transmission to perform at its best.
Can changing transmission fluid cause problems?
While changing your transmission fluid won't damage the condition of your transmission, if you haven't been changing it frequently enough, you may discover that your transmission slips.Oct 27, 2018
Should I change transmission fluid if it's never been changed?
If it's bright pink-the fluid is new. No need to change it. If it's light brown with a hint of pink-It needs to be replaced. If it hasn't been changed in a long time-it will be very dark brown.Nov 4, 2019