I just maybe over killing it here but before pulled the plugs I pulled in about 3 gallons (until it runs pink out exhaust) of RV anti and then pulled the plugs. Anti came out everywhere, this will keep residuals from hard freeze and also give a bit of added corrosion protection. Be sure to pull the strainer cap as well, that will hold water that won't drain from the trans plug.
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Matt
2016 Moomba Craz
440 Raptor
Surf Edition
Standard Cabin Stereo
900# Rear Ballasts
Supra Mariah - Sold
F250 6.7L Diesel Tow Vehicle