Yea I tried mixing at first but quickly got sick of having to measure and mix every time I did a flush. The pre-mix was so much easier to just dump in lol.
I took a good hard look at my new engine's block tonight, and I can't BELIEVE how much cleaner it is than my current one. It came from the junkyard out of a car with unknown mileage. This thing is definitely going to get done right....
When I finally get it installed, what kind of [preventative] rust/corrosion/lube treatments should I look into?