I have used multiple coolants and I have never found one that is perfect. I've used Blaser straight oil (really messy, wouldn't reccomend it), Blaser semi-synthetic(can't remember the name), Hangsterfers NeoSol 400 (Best performing coolant I have seen to date but had some stink problems that forced me to switch), Twin Specialties Super Kool 1000, Rustlick Ultracut 375R, and a few more that aren't worth mentioning. I recommend NeoSol 400 because it was the best coolant I have seen, it increased our tool life and surface finish was never a question but once that coolant goes rancid it is god awful and we tried everything so we eventually had to switch. Most coolants are very similar and there are hundreds of brands so its all preference. |