My backhoe has the red extended life coolant ( 416 C Cat ) anyway , no one carries that around were I live. I was at Orielly's looking around and they have a 50/50 premix that says mixes with any brand or any color. I needed to top off the coolant so I picked up a gallon of it and filled it up. Here's the question , have anyone had any experience with this and were there any ill effects. For me its easier to get the premix than getting straight antifreeze and then travelling to get a gallon of distilled water. Just curious about others experience.