Automatic transmission flush DIY
Hello guys! Have been planing to do a transmission flush myself, because i have read that using a machine can potentially ruin my transmission. So i found a few videos on disconnecting the returnpipe from the radiator, connect some 3/8 hose and put it a bottle. First drain the dirty transmission oil (about 2 quarts) from the sump. Add 3 quarts of new oil. Turn the engine on, and purge 2 quarts in the bottle, stop and add 2 new quarts. Repeat until the oil is nice and red. Then finish with adding only 1 quarts. My question is, when starting the car, should i be in park or neutral in order for the oil to start flowing?