cooling system cavitation
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Mountain Pass
Joined: Oct 2003
Posts: 207
Likes: 1
From: Desert, Arizona.
cooling system cavitation
is it a problem in 6.9s like it is in 7.3s ??
i add the napa gunk about every 6 months in my 7.3 to prevent cavitation.
do i need to do the same in the 6.9 ??
i add the napa gunk about every 6 months in my 7.3 to prevent cavitation.
do i need to do the same in the 6.9 ??
Methanoholic
Joined: Mar 2009
Posts: 6,442
Likes: 8
From: Maine (NorCal Native)
No and Yes, The 6.9 has thicker cylinder walls and is not as susceptible, However it can still happen to ANY Diesel.
Test before adding additive, maintaining a proper PH balance is the key, not just having it in the system.
-Enjoy
fh : )_~
Test before adding additive, maintaining a proper PH balance is the key, not just having it in the system.
-Enjoy
fh : )_~
Cargo Master
Joined: Mar 2006
Posts: 2,789
Likes: 5
From: Sand GAp, KY
I seen some coolant at Kentucky Motors about a week ago that said it was for all diesel engines and said on the jug "no SCA's needed". It was a gold colored jug. I will check on the name Monday as they are closed on sundays. It even had a mileage chart on it that said how long it was good for in highway vehicles and hour chart for equipment. If it works I plan to use it as test strips and sca additive seems to be hard find around here, none of the local parts stores have either.
Posting Guru
Joined: Apr 2008
Posts: 2,392
Likes: 1
From: Green Lane, Pa.
Dave, tell us why all 6.0 owners don't have to add SCA's additives to our cooling system? 100,000 first change 50,000 then on after.
Posting Guru
Joined: Apr 2008
Posts: 2,392
Likes: 1
From: Green Lane, Pa.
The Ford Gold is also in my 1989 7.3 IDI f250 Lariet for a year now. No SCA's required. My 2003 F250 6.0 coolant system was flushed last year at 103,000 and I owned the truck since new and when changed by me was tested with Wix filtration Corp. test strips and still tested perfect after 5 years/ 103,000 miles.
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Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 16
From: Nutter Fort, WV
I ran Ford Gold in my 6.9 for a year.
It took 1/2 as much DCA 4 to bring the SCA level within spec as it does with other antifreeze, but it still required some.
As for the 6.0, I know very little about that engine other than very basic stuff.
If the block is close to the same block the 7.3 used, being only a 6.0 tells me it has a very good possibility of having even thicker cylinder walls than a 6.9 does.
So that in it's self could be the reason.
Assuming the same stroke like the 6.9 and 7.3 have,
7.3 bore 4.110
6.9 bore 4.000
6.0 bore around 3.7525 asuming the stroke is still the same.
I would have to look at bore and stroke of the 6.0 to even offer a better guess since I never looked into the engine differences since the first generation Power Stroke 7.3.
It took 1/2 as much DCA 4 to bring the SCA level within spec as it does with other antifreeze, but it still required some.
As for the 6.0, I know very little about that engine other than very basic stuff.
If the block is close to the same block the 7.3 used, being only a 6.0 tells me it has a very good possibility of having even thicker cylinder walls than a 6.9 does.
So that in it's self could be the reason.
Assuming the same stroke like the 6.9 and 7.3 have,
7.3 bore 4.110
6.9 bore 4.000
6.0 bore around 3.7525 asuming the stroke is still the same.
I would have to look at bore and stroke of the 6.0 to even offer a better guess since I never looked into the engine differences since the first generation Power Stroke 7.3.
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Posting Guru
Joined: Apr 2008
Posts: 2,392
Likes: 1
From: Green Lane, Pa.
I have added Ford Gold last Sept. to my 7.3 IDI and 3,000 miles later it still tests very good, now maybe 3,000 is not a true test but in the 6.0 additives are never required. The 7.3 Powerstroke I have no knowledge as to additives.
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