2000StreetRod
Moderator Emeritus
- Joined
- May 26, 2009
- Messages
- 10,597
- Reaction score
- 334
- City, State
- Greenville, SC
- Year, Model & Trim Level
- 00 Sport FI, 03 Ltd V8
I just read a thread on flushing the transmission fluid on a 5R55E. It stated that when starting the engine, fluid could drain from both ports - not just the output port that connects to the external oil cooler(s). Does anyone know for sure which port (upper or lower) on the transmission case is the output port? A while back I disconnected one line from my oil cooler, started the engine and collected about half a quart from one line. I assumed that line to be the output but now I'm concerned it may have just been drainage and that flow from the real output line was blocked by the transmission internal thermostat.