what now is best to prevent rust returning?

[ryanheacox]

If it's starting to look red again here is what I would do.


1. Drain and refill with water and add a scoop or two of dishwasher detergent. This will clean out any grease and oil that might have made it's way into the cooling system.


2. Get a bottle of Thermocure, follow the instructions on the bottle. You won't believe how clean this will get your cooling system.



3. Refill with 50/50 conventional green antifreeze and leave your rust problems in the past.