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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Description

❄️ Keep your engine cooler, longer, and smarter.

PUMP UP LONGEVITY - Boost your water pump’s life by up to 30%—because replacements are so last season.
PLUG PLAY COOLANT UPGRADE - Easy to add, instantly effective—your engine’s new best friend.
CHILL YOUR ENGINE LIKE A PRO - Slash coolant temps for peak performance and avoid overheating drama.
TRUSTED ROYAL PURPLE QUALITY - Engineered by Royal Purple, a brand synonymous with high-performance automotive care.
PRECISION VOLUME MAXIMUM IMPACT - 355ml bottle designed for exact dosing—no waste, all power.

Royal Purple Purple Ice Radiator Additive (355ml) is a premium coolant enhancer that lowers engine coolant temperature by up to 10°C and extends water pump life by approximately 30%. Packaged in a precision 355ml bottle, it’s designed for easy application and reliable performance, ensuring your vehicle runs cooler and lasts longer.

Specifications

Manufacturer	Royal Purple
Brand	Royal Purple
Model	01600
Product Dimensions	9.53 x 2.9 x 19.05 cm; 340.19 g
Item model number	ROY01600
Is Discontinued By Manufacturer	No
OEM Part Number	01600
Item Dimensions L x W x H	9.5 x 2.9 x 19.1 cm
Voltage	12 Volts
Viscosity	0W-8
Item Weight	340 g

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