First of all, let me say Tiger Japanese is an AWESOME company to buy a JDM engine from- after having my chain yanked by some other engine suppliers I appreciate their outstanding communication and shipping time in addition to the engine being everything I hoped for and more. I did the works to the engine while I already had it on the floor (which I highly recommend everyone make their practice) and while doing the timing belt I pulled the valve cover and saw some water standing in the head, so I checked the catch can which was also full of water, I pulled the intake manifold (had to do it anyway) and it had some water in it (no surprise, its a D15B 96-2000 with the vertical intake). Finally, I drained the oil and it was murky brown and milky like there was a considerable amount of water in it. So, my question is what is the typical protocol for purging contaminated oil? I don't want to screw with any bullshit chemicals, I'm guessing I should just do something like fill it up with some cheap oil, run it for several minutes then change it again.