One is finding conflicting information and recommendations regarding routine maintenance of automatic transmissions. We're talking regular automobiles and light trucks here. Dealerships want to sell a "BG" flush package, where the transmission is supposedly flushed out with a pressurized system. Others recommend a more conventional approach, where a technician drains the fluid, drops the pan, pulls the filter, cleans everything up without a high-pressure hose, checks for ugly stuff, and then puts it all back together with a new filter and seals, and of course tests it... Others advocate just draining however much fluid can be drained out and then...