I need to find a forum where other S197 owners and myself can swap ideas and information about these cars. lol I'll pen a new thread over in the approriate section to see if anyone else can chime in. John mentioned something about bubbles in the fluid. I've also read that the low fluid problem feeds on it's self. I've also been told that the 5R55s will not engage the gears when the fluid is too low. Hell, oops, heck, could have been a mixture of any/all of the above.