Long story short is my son put 2 bottles of Lubeguard Red in his 04 bonneville to try and take care of a torque converter shudder. Turns out a good tune up took care of his problem. My question is , is 2 bottles OK to keep in the trans ? I could suck out 6 quarts and replace with new fluid. I changed the filter and fluid a 1000 miles ago before the Lubeguard was added.