how about a cadi norhtstar engine?

Yes. No problem with the Northstar engine. Use Purple Ice as directed on the bottle.

will this be ok for my 2008 ford edge v6?

I have used it for years in all my vehicles and am yet to replace a water pump or a radiator. It will work just fine in your 2008 Edge.

How can I replace it annually do you add a bottle every year or change the coolant with it ?

You can just add more each year, then start over again when you do your periodic coolant flush.

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Royal Purple 01600 Purple Ice Super-Coolant Radiator Additive - 12 oz.

Product ID: 1243964

Details

Brand
Royal Purple
Global Trade Identification Number
Item Weight
0.8 Pounds
Liquid Volume
1 Quarts
Manufacturer
Royal Purple

⚙️Lubricates water pump seals

🌡️Up to 22°F coolant temp drop

🛡️Advanced corrosion & erosion defense

30084CFA

Duties & taxes included

In stock

Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

❄️ Stay Cool, Stay Ahead: The Radiator Additive Every Millennial Manager Swears By!

MAINTENANCE MADE EASY - Simple annual dosing keeps your cooling system clean, efficient, and race-ready without freeze protection worries.
UNIVERSAL COMPATIBILITY - Works seamlessly with all coolant types—green silicate, OAT, HOAT—and safe for diesel engines.
ULTIMATE CORROSION SHIELD - Protects aluminum and all cooling system metals from erosion, electrolysis, and corrosion year-round.
WATER PUMPS BEST FRIEND - Contains specialized lubricants that extend water pump life by reducing seal wear.
COOL YOUR ENGINE LIKE A PRO - Reduces coolant surface tension for superior heat transfer and up to 22°F cooler running temps.

Royal Purple Purple Ice is a high-performance synthetic radiator additive that lowers engine coolant temperatures by up to 22°F through reduced surface tension, while providing superior corrosion and erosion protection. Compatible with all coolant types and diesel engines, it lubricates water pump seals to extend component life. Designed for annual use, Purple Ice optimizes cooling efficiency and system longevity, making it a must-have for professionals who demand peak engine performance and reliability.

Specifications

ASIN	B000BRGAJ2
Best Sellers Rank	#5,530 in Automotive ( See Top 100 in Automotive ) #33 in Antifreezes & Coolants
Brand	Royal Purple
Customer Reviews	4.5 4.5 out of 5 stars (1,927)
Date First Available	July 7, 2004
Item Weight	12.8 ounces
Item model number	ROY01600
Manufacturer	Royal Purple
Manufacturer Part Number	01600
Model	01600
OEM Part Number	01600
Position	Center
Product Dimensions	3.75 x 1.14 x 7.5 inches
Voltage	12 volts

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