Coolant additives?
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Junior User
Joined: Jun 2013
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From: Wautoma WI
Coolant additives?
So I always thought in our 6.4s we had to run an anti cavitation additive. I talked to my ford dealer and I asked for the additive recommended for my truck and he said that ford does not require any additives in the 6.4... So some one who actually knows please school me
More Turbo
Joined: Jan 2011
Posts: 627
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Pay close attention to this quote from the pdf Senix posted:
"Check coolant nitrite strength using the 3-Way Antifreeze Test Strip kit Rotunda # 328-00001 to determine if additive is required. If the nitrite strength is between 800 ppm & 300 ppm add 32 fl. oz. (946 mL) of Supplemental Coolant Additive Motorcraft VC-8 or equivalent. If nitrite strength is below 300 ppm flush & refill engine coolant (refer to Motorcraft Premium Gold Engine Coolant Change Record) – Do not add Supplemental Coolant Additive if flush & refill is required."
Regular coolant nitrite testing is absolutely required. The test interval varies from document to document, but 15k is pretty much the max. I recommend 5k while you are doing your oil change since test strips are cheap and testing only takes a minute to do.
Based on the results of the nitrite test you are likely to need to add the VC-8 coolant additive well before you reach the 60k that you should be replacing the coolant at. Some have reported nitrites down to the replace level in only 20-30k.
The dealers sadly tend to have little understanding of the maintenance requirements for a diesel engine, especially the emissions controlled ones.
"Check coolant nitrite strength using the 3-Way Antifreeze Test Strip kit Rotunda # 328-00001 to determine if additive is required. If the nitrite strength is between 800 ppm & 300 ppm add 32 fl. oz. (946 mL) of Supplemental Coolant Additive Motorcraft VC-8 or equivalent. If nitrite strength is below 300 ppm flush & refill engine coolant (refer to Motorcraft Premium Gold Engine Coolant Change Record) – Do not add Supplemental Coolant Additive if flush & refill is required."
Regular coolant nitrite testing is absolutely required. The test interval varies from document to document, but 15k is pretty much the max. I recommend 5k while you are doing your oil change since test strips are cheap and testing only takes a minute to do.
Based on the results of the nitrite test you are likely to need to add the VC-8 coolant additive well before you reach the 60k that you should be replacing the coolant at. Some have reported nitrites down to the replace level in only 20-30k.
The dealers sadly tend to have little understanding of the maintenance requirements for a diesel engine, especially the emissions controlled ones.
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buickman69
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Jul 22, 2018 11:29 AM
