cooling system rust inhibitor recommendation

[GLM409]

Any recommendations on a rust inhibitor to add to the cooling system? I'm running water, water wetter and last change I put in prestone rust inhibitor. Based on what I just drained it doesn't appear the rust inhibitor did its job. Any recommendations?

Thanks in advance,

GLM409

[Rockfish39]

IMHO Evans' is the only way to go. Ive been using it for seven years now. No rust, no calcite, no problems with the aluminum parts. GOOD STUFF!!!! :brow

Just one word of caution though, you CANNOT mix this product with water, as water is a contaminant to propylene-gyol.

Expensive, but worth it!

Rock :cool: