Transmission Fluid

[msheffer]

Last summer I bought my 97 SHO. I recently just took it in for inspection at a local shop and maintained since it just hit 100k miles. They told me that my transmission fluid is pretty black, probably the previous owner never regularly changed the fluid. They told me they wouldn't recommend changing it if I had no problems with the transmission as of yet, because its used to this old fluid and could shock it and could cause problems if they flush and put in new trans fluid.
It sounds stupid waiting till I start having a problem with it. What would you guys recommend. Would it be safe changing the trans fluid?

 

[SHOtimer]

What you will want to do is drop the pan, clean the pan, the magnet, and change the filter. Then fill it up with about 6 quarts of new fluid. The entire tranny holds about 12-13 quarts. This will introduce new fluid to the transmission without changing all of it at once. They are right that sometimes totally flushing a tranny with really bad fluid can **** it. After you do this, you'll want to put maybe 5-8k on it. Then either drop the pan again and change half or do a complete flush. Either way, you don't want to just let that old fluid get worse.

Doug

 

[wood_e]

You might as well to the whole thing. SHOZ123 has a nice write up on it if you search.