[HELP] Coolant for the home hobbiest

[arvidj]

Dr Stan,

Thanks for the information. I would not mind the aroma but it is in the basement and I think Bev will object to "what have you done to stink up the house!!!".

Ken,

If it will be primarily HSS tools and drills and steel and aluminum would you recommend a full synthetic or semi-synthetic? I am assuming that my needs are more in the lubricity end rather than the cooling end of the spectrum, but that is an uneducated guess.