What is the transmission fluid level and condition?
1. Drive around for 10 minutes in the city after the transmission is at operating temperature.
2. Park on a level surface and apply the parking brake.
3. With P selected, shift through every gear and return to P.
4. Pull the transmission dipstick with the engine idling, wipe it clean, reinsert it completely, and read the level. It must be within the notched area labeled "HOT". Check for fluid contamination after wiping on a paper towel.

The fluid should be red, and not smell burnt.
Lubegard Red is a transmission additive that is well lauded by many transmission shops as well as backed by several manufacturers for certain transmissions. It can help mitigate slower shifts and lower overall transmission fluid temperature. I use it in my Pathfinder's transmission and in my experience it has smoothed certain shifts, especially in and out of downshifts. NAPA and Amazon sells Lubegard Red. I would suggest trying this additive - it is the only additive I would recommend for a transmission.
