That is true the torque converter holds a bunch of fluid when you drop the pan. With that many miles and dark fluid you want to keep from changing all the fluid. Some form of transmission addative is a great idea I like the lucas products.szh wrote:Ummm ... when you drain an Infiniti Q45 transmission (i.e., without using a powered flush system like a B&G that cycles the gears), then all you get is about 50% to 60% of the fluid out in the first place. I.e., there is no need to "put 50% of the old fluid back in" as far as I know.gwoods wrote:I suggest a 50% fluid change to start out.
Drain all the fluid into a clean catch container.
Change the filter.
Put 50% of the old fluid back in + 1 bottle of Lucas and 50% new fluid.
The presence of a dark transmission fluid usually means it was never looked after ...
My suggestion echoes Jesda's. But if a simple drain and fill does not improve the situation, you have a dead transmission. You will need to rebuild or replace it ...
Z
Automatic transmissions are not that scary. Take everything out in order replace clutch packs and steels put everything back in the reverse the disassemble order. Most are held together with snap rings that are directional, meaning they have an up and down side so make sure you put them in the right way. I had to buy a digital micrometer when I rebuilt mine so I could figure out which snap ring was which.
I upgraded the clutchs using a SUNCOAST kit that feature KOLEEN steels and red frictions. The next day cylinder #3 came apart so I got to rebuild the motor too, well thats nitrous for you.
