VC 9 Flush - Ford Powerstroke Diesel Forum
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post #1 of 14 Old 12-08-2012, 10:01 AM Thread Starter
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VC 9 Flush

Well spent yesterday installing block drain valves on both sides of the engine, passenger side was a pain! Flushed with restore already and now flushing with tap water before adding VC-9. Couldnt find the restore plus, so I purchased the VC-9 at the dealer. No instructions on the bottle, so is there a certain procedure to use this stuff? Also, would it be ok to drive with the VC9 in for about 100 miles or with just tap water? Wasn't planning of driving it this far today but need to deliver a cabinet to someone.
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post #2 of 14 Old 12-08-2012, 10:15 AM
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Remove the thermostat from the thermostat housing, add the 2 quarts of vc-9 and fill with distilled water. Run the truck at 1200 rpm for an hour, drain cooling system then flush out with distilled water and make sure you get out all the chemical out by draining the block and radiator. When you remove the thermostat take a look and see if the thermostat is recessed in the housing. If it is install a new thermostat. The best way to do the flush is having the thermostat removed to get a good flow through the cooling system. So I wouldnt drive it with the thermostat removed.
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post #3 of 14 Old 12-08-2012, 10:25 AM Thread Starter
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I removed the thermostat already for the restore flush, so how about if I replaced it and drove it with the vc9 in it for an hour? Thats about how much driving I will need to do.
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post #4 of 14 Old 12-08-2012, 10:43 AM
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When I did mine, I drive from cheyenne to lowland and back with the restore plus, about an hour each way. It won't hurt it, I feel like it may have cleaned it up a bit more. Just so you are ready I had to flush 9 times with distilled before it came out clean and clear after the restore plus.

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post #5 of 14 Old 12-08-2012, 10:45 AM
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I also forgot, I hope it is cold, it's best to have the heat blasting the whole time, I had to have the windows down.

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post #6 of 14 Old 12-08-2012, 10:48 AM
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You should be ok because you already flushed it with restore. After your done make sure install a filter kit.
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post #7 of 14 Old 12-08-2012, 10:48 AM Thread Starter
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Ya I'm on flush #4 after the restore so far. Should be the last. Had a lot of sludge junk in the coolant plus fuel. Guess I'll go ahead and drive it with the vc9 and the thermostat back in.
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post #8 of 14 Old 12-08-2012, 11:06 AM
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if you can't watch your ECT don't drive with your thermostat removed. I was pretty surprised how hot ECT can get with the t-stat out. Much hotter than just running the vehicle for an hour at 1200 RPM

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post #9 of 14 Old 12-08-2012, 11:15 AM
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I had the opposite, my ect's stayed really low it was hard to get the temp to 190.

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post #10 of 14 Old 12-08-2012, 11:21 AM Thread Starter
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I drove around with the thermostat out with the restore in it and it took forever to get up to temp. But I did just put the thermostat back in before running with the vc9 so I should be ok. Plus I'll be watching the temp on my torque app.
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