Ford recently replaced Motorcraft Premium Specialty Green (concentrated form of Mazda FL-22) with a new yellow coolant, Motorcraft VC-13-G:
http://www.fcsdchemicalsandlubricants.com/quickref/FCSD Motorcraft Yellow Antifreeze-Coolant Backward Compatability.pdf?fbclid=IwAR0nhgEBJ0C-zscnp_CzScE7ipGKQIFr_Z6wojPZcKKqZOhJv5yDr33_lFE
Although it is unconfirmed, there is a strong suspicion that VC-13-G is the same as Prestone’s Cor-Guard All Makes/Models coolant. Ford’s TSB for the Transit van heater core issue (#18-2172) called for using Prestone Cor-Guard coolant in place of the factory fill; the same TSB was recently updated (#20-2053) to use VC-13-G.
Mazda FL-22/Motorcraft Premium Specialty Green was supposed to be similar in chemistry to the OEM Asian Coolants. Basically, it was a long-life OAT coolant containing phosphates.
Since Ford is deeming their new yellow coolant (which is Prestone IMO) to be a suitable replacement for FL-22/Premium Specialty Green, wouldn’t it make sense to use Prestone as a replacement for Asian coolants on out-of-warranty vehicles? The Prestone product is newer technology, less expensive and allows for consolidation of inventory.
http://www.fcsdchemicalsandlubricants.com/quickref/FCSD Motorcraft Yellow Antifreeze-Coolant Backward Compatability.pdf?fbclid=IwAR0nhgEBJ0C-zscnp_CzScE7ipGKQIFr_Z6wojPZcKKqZOhJv5yDr33_lFE
Although it is unconfirmed, there is a strong suspicion that VC-13-G is the same as Prestone’s Cor-Guard All Makes/Models coolant. Ford’s TSB for the Transit van heater core issue (#18-2172) called for using Prestone Cor-Guard coolant in place of the factory fill; the same TSB was recently updated (#20-2053) to use VC-13-G.
Mazda FL-22/Motorcraft Premium Specialty Green was supposed to be similar in chemistry to the OEM Asian Coolants. Basically, it was a long-life OAT coolant containing phosphates.
Since Ford is deeming their new yellow coolant (which is Prestone IMO) to be a suitable replacement for FL-22/Premium Specialty Green, wouldn’t it make sense to use Prestone as a replacement for Asian coolants on out-of-warranty vehicles? The Prestone product is newer technology, less expensive and allows for consolidation of inventory.
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