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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Dec 2015 Posts: 2,063 Big Bolt Forum Moderator | | Big Bolt Forum Moderator Joined: Dec 2015 Posts: 2,063 | 55 manual says 17qt. I would use that capacity. 2 gallons of antifreeze is 8 qts, which is what you want for a 50/50 mix in a 16qt system. Look on the back of the jug, and depending on how cold it gets in your area, that should be fine. You can also get an antifreeze tester to see where you are at currently. | | |
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