Posted by Chris Case [108.247.147.90] on Friday, December 04, 2015 at 13:32:54 :
In Reply to: ATF posted by DDD [209.253.157.5] on Friday, December 04, 2015 at 13:05:48 :
More like brake fluid than oil. Maybe.
It does like to penetrate, but doesn't leave any protective oil. It's probably good at degreaseing cooling systems, said grease makes an insulating layer on blocks and radiators. Not much problem on new stuff, but if your water pump has a zerk, could be.