This is the best scientific source I have read as to how to remove antifreeze from a crankcase. Read the full article below and I will paste in the summary from the article.
http://www.machinerylubrication.com/Read/193/oil-glycol
Procedure for Cleaning Glycol from Engines
A flushing procedure proposed by one major oil company to remove glycol from engine internal surfaces involves the use of Butoxy-Ethanol (trade name Butyl Cellosolve, Union Carbide). The flushing procedure for conditions of less than five percent glycol contamination is summarized below:
1. Drain oil from compartment and all lines and components.
2. Install new filter elements.
3. Mix an ISO VG 32 R&O mineral oil 50/50 with Butyl Cellosolve.
4. Use the mixture to turbulently flush (using an external pump installed at the turbocharger supply line or other suitable pumping method) internal surfaces by ample flow and volume for one hour at a temperature not less than 70°F (21°C).
5. Drain the system completely, mop out crankcase and replace filters.
6. Repeat steps 2 through 5, using a 60 percent R&O 32, 40 percent kerosene mixture.
7. Remove and inspect all main bearings, journals and other engine surfaces.
8. Remove the external pump and recharge with the correct lubricant. Replace the filter.
9. Monitor the engine carefully until all conditions stabilize.
AW-32 sold in farm/auto stores.
http://www.oreillyauto.com/site/c/detail...9&ppt=C0139
Butyl Cellosolve may be harder to find locally but I would check with NAPA class of suppliers. It is on Amazon and eBay.
http://www.ebay.com/itm/2-Butoxyethanol-...725.m3641.l6368