u/Dramatic_Piano_2751

I have a 97 ls400 with 260k miles. I have no idea if the transmission fluid has ever been changed. I smell the dipstick and it smells awful. The only time the transmission acts weird is the first start of the day and changing it from reverse to drive takes a second to catch gears causing a little jolt but other than that it works great. Do you think it’s a good idea to do a filter + drain and fill or do you think I should just leave it? The fluid smells terrible.