Motorcraft gold coolent

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gnr

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Originally Posted By: Gene K
G05 is Potassium free (added for future reference).
Can I ask where you came upon this info please? Thanks!
 
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Originally Posted By: Timo325
So Motorcraft Gold or Xerex? Are there better options out there for the Mustang?
Buy whatever is cheapest. While I hear of people changing to longer life coolants, I'd rather stay with what is approved. Motorcraft G05 is obviously Ford approved. Zerex G05 is Mercedes approved and maybe also Ford approved.
 
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The on-line version of the OP's owners manual says Add Motorcraft Premium Gold Engine Coolant or equivalent meeting Ford specification WSS-M97B51-A1" Valvoline publishes Zerex G-05 is approved for Ford WSS-M97B51-A1. So what's not necessarily approved?
 
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