Flush 'n Fill
Thread Starter
Melting Slicks
Joined: Nov 2005
Posts: 2,142
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From: Leonardtown Maryland
Flush 'n Fill
I'd be interested if anybody has installed the Prestone Flush 'n Fill Kit on their C4. I did a search on the forum and didn't find any links. I'll admit I'm being lazy and if the only way to change my coolant is to pull the knock sensors, hoses, and such then so be it. I just got my '94 factory manuals from Ebay so I have some "light" reading to do in preparation. But I thought I'd ask anyway about the kit.... Thanks in advance by the way.
Race Director
Joined: Sep 2000
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From: The Top of Utah
I have the Prestone reverse flush kit installed in my car. It works like a charm. The cooling system can be flushed, effectively, with or without the Prestone kit, but there is no substitute for draining the block via the block drain plugs (knock sensors).
RACE ON!!!
RACE ON!!!
Thread Starter
Melting Slicks
Joined: Nov 2005
Posts: 2,142
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From: Leonardtown Maryland
Thanks for the reply. I really do need to get into the books on the car now that I have them. If the weather stays nice I may try and tackle the coolant soon, otherwise it will be part of my Spring cleaning. The more I accomplish now the more driving I can do later!
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From: Fort Knox, KY
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On my LT-1, I just unscrew the radiator cap, then attach the hose from my Shop-Vac to the outlet. I then switch the vacuum blower motor to "reverse" and use the rushing air to force all the coolant out of the system.
Works fast and easy and you don't have to remove the knock sensors, petcock, hoses, etc. to drain all the coolant from the radiator.
Works fast and easy and you don't have to remove the knock sensors, petcock, hoses, etc. to drain all the coolant from the radiator.
Thread Starter
Melting Slicks
Joined: Nov 2005
Posts: 2,142
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From: Leonardtown Maryland
Originally Posted by onedef92
On my LT-1, I just unscrew the radiator cap, then attach the hose from my Shop-Vac to the outlet. I then switch the vacuum blower motor to "reverse" and use the rushing air to force all the coolant out of the system.
Works fast and easy and you don't have to remove the knock sensors, petcock, hoses, etc. to drain all the coolant from the radiator.
Works fast and easy and you don't have to remove the knock sensors, petcock, hoses, etc. to drain all the coolant from the radiator.
Safety Car
Joined: Dec 2004
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From: Poop land
Originally Posted by onedef92
On my LT-1, I just unscrew the radiator cap, then attach the hose from my Shop-Vac to the outlet. I then switch the vacuum blower motor to "reverse" and use the rushing air to force all the coolant out of the system.
Works fast and easy and you don't have to remove the knock sensors, petcock, hoses, etc. to drain all the coolant from the radiator.
Works fast and easy and you don't have to remove the knock sensors, petcock, hoses, etc. to drain all the coolant from the radiator.
Race Director
Joined: Sep 2000
Posts: 17,298
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From: The Top of Utah
Originally Posted by onedef92
On my LT-1, I just unscrew the radiator cap, then attach the hose from my Shop-Vac to the outlet. I then switch the vacuum blower motor to "reverse" and use the rushing air to force all the coolant out of the system.
Works fast and easy and you don't have to remove the knock sensors, petcock, hoses, etc. to drain all the coolant from the radiator.
Works fast and easy and you don't have to remove the knock sensors, petcock, hoses, etc. to drain all the coolant from the radiator.
RACE ON!!!
Melting Slicks
Joined: Mar 1999
Posts: 2,830
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From: Las Vegas Nevada
I would imagine he is active in motorsport competition. The additude in any level of motorsport, in any position, is never quit. Always press on - it's not over until the race is finished.
Thus giving the motto "RACE ON!!!"
that would be my guess anyway.
Thus giving the motto "RACE ON!!!"
that would be my guess anyway.
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Team Owner
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From: Fort Knox, KY
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Originally Posted by kopbet89c4
Did you have let the car warm up and idle to do this??? I like innovative thinking!
It might take you a little longer since you'll have to wait until you can SAFELY open the radiator without the risk of getting scalded, but even with this minor incovenience my method is definitely faster than removing the hoses and knock sensors to get all the coolant out.
Last edited by onedef92; Feb 1, 2006 at 08:46 AM.
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From: Fort Knox, KY
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Originally Posted by CFI-EFI
That is definitely innovative. I have a hard time believing, however, that the blower can exert enough force to evacuate the water from the lower reaches of the block, such as down by the block drain plugs. Maybe.
RACE ON!!!
RACE ON!!!
Drifting
Joined: Sep 2005
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From: Pasadena Maryland
Originally Posted by onedef92
On my LT-1, I just unscrew the radiator cap, then attach the hose from my Shop-Vac to the outlet. I then switch the vacuum blower motor to "reverse" and use the rushing air to force all the coolant out of the system.
Works fast and easy and you don't have to remove the knock sensors, petcock, hoses, etc. to drain all the coolant from the radiator.
Works fast and easy and you don't have to remove the knock sensors, petcock, hoses, etc. to drain all the coolant from the radiator.
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From: Fort Knox, KY
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Originally Posted by kalister1
Where does the coolant go? Do you open anything else to let it out?
Race Director
Joined: Sep 2000
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From: The Top of Utah
When *I* normally flush my system, I pull the bottom radiator hose, for several reasons, not the least of which, is that it will pass larger objects than that tiny petcock. Not to mention near instant draining of the coolant. I generally do a very thorough flush job. I warm it up to open the stat and then pull the bottom hose. I repeat once or twice just to get most of the color out of the coolant. Then I let the warm engine run while it is reverse flushing. I'll pull the bottom hose (I don't put the clamp back on until the operation is finished) to drain it, rewarm it up, and reverse flush, as above, several times. I pull and clean the overflow reservoir. Then I button everything up and add a gallon, to a gallon and a half, of 100% antifreeze, because the drain plugs weren't opened/pulled and there is plain water in the lower block. Then I fill the reservoir to the cold mark and top off and "pack" the radiator with 50/50 antifreeze. I'm sure I'm not the only one on here with a 22+ year old radiator, but I think decent maintenance is one reason it has lasted.
RACE ON!!!
RACE ON!!!