I have an 08 Impala lt with roughly 163000 miles. The tranny has been slipping slightly for about 4 1/2 years which i know is that darn input clutch piston issue. I have had it looked at yearly and of course when it is looked at it works fine. Now though I seem to be having another issue. This past November and December I had a severe oil leak fixed. Now I have noticed a tranny fluid leak on my driveway. It is noticeable but when I check my fluid levels they are perfectly normal which is very confusing. I am sure it is tranny fluid and not oil or brake or power steering fluid. I know it is getting close to time for me to change out my tranny cause even though the slipping has eased up I see (metal glitter ) in my tranny fluid. I have been doing regular fluid changes but was told now to be careful changing it cause it could cause more damage. So now I am at the crossroads. Should I just get a performance tranny or just get mine rebuilt? I need some opinions please.