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If you read Fords flush procedure, you need to drain, add 2 qts. VC-9 iron cleaner, top off with distilled water and drive or run for approx. 1 hour. I just took mine for a 20 mile freeway drive. Then drain and remove t-stat. Refill and flush 4 to 5 times with distilled water till drain water coming out is as clear as water going in. Replace t-stat with new O ring and add 1/2 cooling system capacity Ford premium gold or Zerex GO5 coolant and then top off with distilled water. You will then have the perfect 50/50 mix. You will need to drive it a few times to get all the air out of the system. Just keep an eye on your degas bottle. The VC-9 is 26.50 + tax per qt. Not cheap but a requirement by Ford.
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2005 Lariet, 6.0, 3:73 1969 Mach 1, 428 CJ
1971 Triumph Trident(SOLD)
2007 Road King flhp
2007 Jazz 5er, 11k
173rd Airborne
Last edited by 69cj; 11-03-2009 at 01:47 PM.
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