Transmission Fluid Black
03-26-12, 11:56 PM
#18
Pole Position
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Its a double edged sword flushing it, Yes you will probably get improved function BUT if you flush it depending on how long the tranny has been neglected most likely all the gunk and stuff has found its place in your tranny.
When you got 20 year old gaskets covered in metal, burnt fluid, pieces of clutches etc it somewhat "holds them in place" If you flush it most likely it will remove whatever is holding all your seals and what not together.
Im always conflicted when i get a neglected tranny in a used car buy, sometimes i just bite the bullet cross my fingers and flush it but on my first sc300 i wasnt that brave and just slowly cycled all the crap out. putting in a new filter ever 2 or 3 drain and fills.
Safest thing to do is drop the pan, fill accordingly and repeat again in a few weeks. Even though its just a chance you could fck your tranny up by flushing it why take that chance???
When you got 20 year old gaskets covered in metal, burnt fluid, pieces of clutches etc it somewhat "holds them in place" If you flush it most likely it will remove whatever is holding all your seals and what not together.
Im always conflicted when i get a neglected tranny in a used car buy, sometimes i just bite the bullet cross my fingers and flush it but on my first sc300 i wasnt that brave and just slowly cycled all the crap out. putting in a new filter ever 2 or 3 drain and fills.
Safest thing to do is drop the pan, fill accordingly and repeat again in a few weeks. Even though its just a chance you could fck your tranny up by flushing it why take that chance???
03-27-12, 02:28 PM
#23
Here's a guide you can use if you ever decide to flush it or just drain and refill;
http://www.lexls.com/tutorials/trans...ransflush.html
http://www.lexls.com/tutorials/trans...anschange.html
Yes, it is from an LS, but we have totally the same tranny and engine. And people have been using this guide for years.
http://www.lexls.com/tutorials/trans...ransflush.html
http://www.lexls.com/tutorials/trans...anschange.html
Yes, it is from an LS, but we have totally the same tranny and engine. And people have been using this guide for years.
Last edited by OG Dada; 03-30-12 at 10:54 PM.
03-30-12, 10:40 PM
#27
Lexus Test Driver
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FYI, the reason 90% of people "flush" their transmissions is because they are having problems, then they blame the flush on it. If your car is having issues to where you think changing fluid would magically solve it, you're wrong. Yes, new fluid does have better detergents in it then the old stuff, but it'll still be removing the same junk.
They started sealing transmissions because people were overfilling and blowing out front pump seals, and messing things up internally by not following proper procedures. Fluids have gotten so far advanced they could push it further...that plus having one of those snazy 5k machines to "flush' your car means more money for the dealership to make (to charge you).
They started sealing transmissions because people were overfilling and blowing out front pump seals, and messing things up internally by not following proper procedures. Fluids have gotten so far advanced they could push it further...that plus having one of those snazy 5k machines to "flush' your car means more money for the dealership to make (to charge you).
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