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I've heard accounts from several people on here who had perfect running transmissions, got a flush done, and then had to rebuild 5k miles later. The flush can break gunk loose from places where it has become "comfortable" and isn't causing problemsand push it into places where it will cause problems with the way that your transmission runs. The flush will clear those extra few quarts that get left in the cooler and lines when you do a TC drain and pan drop, but for a 16 quart transmission, 2-3 quarts is just a drop in the ocean. It isn't worth the risk in my opinion.
Reminds me of a 79 Cougar I had when I was in high school. We were doing a tune-up and when we went to change the oil, nothing came out of the drain pan. Turns out after trying to figure what was wrong, we decided just to pull the oil pan off and found a good amount of sludge just sitting on the bottom. We cleaned out the pan, ran some gunk remover through the engine and thought we were good. That is until a week later and every seal had started to leak.
Reminds me of a 79 Cougar I had when I was in high school. We were doing a tune-up and when we went to change the oil, nothing came out of the drain pan. Turns out after trying to figure what was wrong, we decided just to pull the oil pan off and found a good amount of sludge just sitting on the bottom. We cleaned out the pan, ran some gunk remover through the engine and thought we were good. That is until a week later and every seal had started to leak.
Rezvani's Latest Post-Apocalytic Monster Is a Ford F-150 Raptor Underneath
Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.