Holy hangover, did you see the treatment for methenol ingestion? Ethonol, and lots of it!
* Specific antidote is ethanol and this should be given IV as a 10% solution in 5% dextrose A loading dose of 0.6g/kg should be given followed by an lVI of 0.07g/kg/hr for non-drinkers (regular drinkers should receive 0. 16g/kg/hr):
Ethanol levels should be checked to ensure they are within the treatment range 1-1.5g/L (21.7-32.6 mmol/L). Ethanol should be given to: (1) all patients pending MeOH levels and then those >0.2g/L (6.25 mmol/L); (2) acidotic patients; (3) anyone needing haemodialysis.
That's 0.1%-0.15% blood alcohol level, ie. pretty well toasted unless you're a pro drinker. Then keep it coming to keep the level up.
I don't know about methanol, but with normal antifreeze the problem is that the body breaks it down into insoluble compounds which plug things up. The ethanol has to be kept high enough to keep those compounds disolved.