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07-03-2022, 08:11 AM
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CC Member
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Join Date: Oct 2007
Cobra Make, Engine: Superformance, Roush 402R
Posts: 303
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Not Ranked
Which Coolant Flush?
It's time to give my car a good coolant flush. Is there a particular brand of cleaner/flush additive that works best to get me started?
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07-03-2022, 09:35 AM
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CC Member
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Join Date: Sep 2002
Cobra Make, Engine: SPF#0760
Posts: 3,387
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Not Ranked
Preston’s flush works well. Empty then Refill with regular water, run engine as directed, then I flush twice with regular water, empty system as best you can the refill with a mix of distilled water and Antifreeze going heavy on the Antifreeze portion because there is water trapped in the system in the block. I never buy the premix Antifreeze. Remember to open the heater control valve when you start the process. I recommend a bottle of water wetter in the final mix. Proper fill height in expansion tank is up to the divider inside the tank. Over filling is not a problem as the system will expel any extra Antifreeze thru catch tank. Remember to empty the catch tank when you start the process because if on the system refill, the tank gets filled to top, it cones out the ent hole on the top and the fans do a wonderful job of distributing it all over the engine compartment.
Biggest pain is getting all the air out of the system on refilling. I always use a vacuum refill system. If you don’t own one, I thing you can borrow one from most auto parts stores, or you can carefully loosen the water temp sensor on the top of the intake manifold and bleed the system. Nor Radiator cap on for this method and engine must get hot to circulate coolant thru engine. Most SPF’s have a drain on the lower radiator hose connection. You will want to replace the copper crush gasket on the drain plug. Remember, Antifreeze is poison to animals and people and bad for environment, oil change shop recycle the stuff for free here.
Blas
__________________
Wiring Diagrams: SPF MKII, MKIII, GT40, CSX7000, CSX8000, Corvette Grand Sport, and Shelby Sebring, Bondurant & Cinema Tribute Cars.
Owner’s Manuals: SPF MKII, CSX7000, CSX8000, Sebring, Bondurant, & Cinema Tribute Cars.
Large, easy to read and trace schematics with part numbers, wire colors, wire gauge, fuses, and electrical upgrade information. Trouble-shooting and replacement part numbers for those roadside repair adventures.
SPFWiringDiagrams@Comcast.net
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07-03-2022, 09:43 AM
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CC Member
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Join Date: Oct 2007
Cobra Make, Engine: Superformance, Roush 402R
Posts: 303
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Not Ranked
Thanks Blas.
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07-06-2022, 10:25 AM
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CC Member
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Join Date: Oct 2007
Cobra Make, Engine: Superformance, Roush 402R
Posts: 303
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Not Ranked
I bought this vacuum refill kit on Amazon and the biggest rad cap adapter on the lower left doesn't seem to quite fit (and I didn't want to force it) on my expansion tank.
For which car/motor should I look for one that fits? Hopefully available on Amazon too.
Also, while discussing rad caps are upgraded caps recommended or what came with it issufficient (has been til now)?
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07-06-2022, 10:29 AM
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CC Member
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Join Date: Oct 2007
Cobra Make, Engine: Superformance, Roush 402R
Posts: 303
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Not Ranked
Quote:
Originally Posted by zzmac
i bought this vacuum refill kit on amazon and the biggest rad cap adapter on the lower left doesn't seem to quite fit (and i didn't want to force it) on my expansion tank.
For which car/motor should i look for one that fits? Hopefully available on amazon too.
Also, while discussing rad caps are upgraded caps recommended or what came with it issufficient (has been til now)?
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07-06-2022, 12:24 PM
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CC Member
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Join Date: Sep 2002
Cobra Make, Engine: SPF#0760
Posts: 3,387
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Not Ranked
I purchased the vacuum / pressure test kit with the rubber plug and clamps. Not suited for use on a regular basis like a mechanic shop but good enough for home use.
__________________
Wiring Diagrams: SPF MKII, MKIII, GT40, CSX7000, CSX8000, Corvette Grand Sport, and Shelby Sebring, Bondurant & Cinema Tribute Cars.
Owner’s Manuals: SPF MKII, CSX7000, CSX8000, Sebring, Bondurant, & Cinema Tribute Cars.
Large, easy to read and trace schematics with part numbers, wire colors, wire gauge, fuses, and electrical upgrade information. Trouble-shooting and replacement part numbers for those roadside repair adventures.
SPFWiringDiagrams@Comcast.net
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07-07-2022, 06:26 AM
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CC Member
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Join Date: Oct 2007
Cobra Make, Engine: Superformance, Roush 402R
Posts: 303
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Not Ranked
What year and car did these expansion tanks come from?
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