tinfoil_hat
I'm Awesome
Those drain plugs are right in the middle of the block, directly above the oil pan. On the drivers side it just looks like a 9/16" hex bolt head almost flush with the block. On the other side it is your knock sensor. It takes an 18mm socket if I recall. When I pulled mine nothing came out. I had to roto-rooter around in there with a length of heavy guage wire. Then all kinds of crap came gushing out.
I have done coolant flushes several times and the only time I felt like I really got the system clean was when I used two jugs of the Prestone flush and I drove the vehicle for a whole week. After that it took 6-8 full refill/ warm up/ drain cycles before the water came out clean. You want to unplug the heater junction so you can flush out the heater core too. I tried some tricks like cutting the diaphram out of an old thermostat to speed up the process but maybe I was just wasting time.
So are you certain you are getting oil in the water when you flush and it's not Dexcool sludge?
I have done coolant flushes several times and the only time I felt like I really got the system clean was when I used two jugs of the Prestone flush and I drove the vehicle for a whole week. After that it took 6-8 full refill/ warm up/ drain cycles before the water came out clean. You want to unplug the heater junction so you can flush out the heater core too. I tried some tricks like cutting the diaphram out of an old thermostat to speed up the process but maybe I was just wasting time.
So are you certain you are getting oil in the water when you flush and it's not Dexcool sludge?