In a large bowl combine the corn chex, goldfish crackers, pretzels and oyster crackers.
Melt the butter. Once the butter is melted add dry ranch mix, dill, and garlic powder. Mix well.
Add melted margarine mixture to the chex mixture. Mix well.
Pour the entire mixture into a 6-quart slow cooker. Leaving the lid open and setting slow cooker on low, cook for 2 hours, stirring every 15 minutes. After 2 hours pour out onto foil and let sit for 5 minutes.
Store in airtight container.
Note: for a quick snack on the go, pour into individual snack bags.
There are 88 calories in 1 serving of Ranch Chex Mix.