Repair Safety Notice:
This information is for general instructional purposes only. Vehicle repair can be dangerous.
Verify all information, follow manufacturer service procedures, use proper tools and safety equipment,
and consult a qualified repair shop when needed.
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JDL
CAR REPAIR CONTRIBUTOR
16,098 POSTS
Usually around 50/50. Use an antifreeze tester. The tester will show the lowest temp that is protected from freezing. Make sure it won't freeze. Whatever the lowest temp gets in your area during winter, that is the level of protection, you need.