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coolant flush

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Old Mar 29, 2013 | 01:57 PM
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Default coolant flush

i am wanting to do a coolant flush [ radiator and engine block ]can anyone advise me on doing this myself or take it to a place where they vacuum all the old out and put 50/50 mix in...my car has dex cool in it ..should i stay with that or change to a premium green anti freeze..also with my engine cold should there be any coolant in the plastic reservoir.

Last edited by chillin-n-killen; Mar 31, 2013 at 05:05 PM. Reason: finished
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Old Mar 29, 2013 | 02:31 PM
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What is the model year of the vette?
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Old Mar 29, 2013 | 02:42 PM
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Default c4 1986

Originally Posted by seabright
What is the model year of the vette?
c4 1986 sorry i didnt mention the year
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Old Mar 29, 2013 | 04:54 PM
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It is always easier for shop to flush the coolant, just depends on your finances, and time available. The job is just labor, and a thorough flush may take 1 to 2 hours, which may cost $100 - $200.
Choosing a shop with a flush machine would be advisable.

A complete coolant flush of your vette should include removal and replacement of the knock sensor located on the bottom of the block.
It is a messy, time consuming job, and the vette needs to be elevated for access to the sensor. If you can afford it, have a shop perform the task. Just find a reputable shop, as some consider opening the petcock, and draining the radiator, a coolant flush.

If a shop is to do the work, ask if you can provide the sensor and coolant...... it will save you a lot of money. Some shops do not allow use of customer parts. Check RockAuto or Amazon for a 1986 knock sensor, and you can buy coolant (green) at any parts house (buy pure coolant and mix it to your climate needs).

The over-flow reservoir level should be at the 'cold' level on the dipstick (with a cold engine). You may find contaminants in the reservoir, so that container should be cleaned, also.

Check the condition of the radiator cap, and gasket. Replacement is inexpensive, so don't hesitate to replace.
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Old Mar 29, 2013 | 06:04 PM
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Default coolant flush

Originally Posted by seabright
It is always easier for shop to flush the coolant, just depends on your finances, and time available. The job is just labor, and a thorough flush may take 1 to 2 hours, which may cost $100 - $200.
Choosing a shop with a flush machine would be advisable.

A complete coolant flush of your vette should include removal and replacement of the knock sensor located on the bottom of the block.
It is a messy, time consuming job, and the vette needs to be elevated for access to the sensor. If you can afford it, have a shop perform the task. Just find a reputable shop, as some consider opening the petcock, and draining the radiator, a coolant flush.

If a shop is to do the work, ask if you can provide the sensor and coolant...... it will save you a lot of money. Some shops do not allow use of customer parts. Check RockAuto or Amazon for a 1986 knock sensor, and you can buy coolant (green) at any parts house (buy pure coolant and mix it to your climate needs).

The over-flow reservoir level should be at the 'cold' level on the dipstick (with a cold engine). You may find contaminants in the reservoir, so that container should be cleaned, also.

Check the condition of the radiator cap, and gasket. Replacement is inexpensive, so don't hesitate to replace.
tnx for all the info..so its okay to stay away from the dex cool ??
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Old Mar 29, 2013 | 06:10 PM
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Originally Posted by chillin-n-killen
tnx for all the info..so its okay to stay away from the dex cool ??
Yep....... C5+ stuff.
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Old Mar 30, 2013 | 10:33 AM
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Default engine flush

Originally Posted by seabright
Yep....... C5+ stuff.
im sorry but im not understanding what you meant by the c5+ stuff ??
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Old Mar 30, 2013 | 10:38 AM
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Originally Posted by chillin-n-killen
im sorry but im not understanding what you meant by the c5+ stuff ??
DexCool antifreeze (orange) is specified for the C5 & C6 Corvettes,
it is not required for the C4.
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Old Mar 30, 2013 | 03:18 PM
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Originally Posted by seabright
DexCool antifreeze (orange) is specified for the C5 & C6 Corvettes,
it is not required for the C4.
Use Evan's coolant and never have to replace it again or worry about corrosion. Yes it is expensive but so is a heater core replacement if you can't do the work yourself.
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Old Mar 31, 2013 | 04:54 PM
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Default coolant flush

Originally Posted by seabright
DexCool antifreeze (orange) is specified for the C5 & C6 Corvettes,
it is not required for the C4.
tnx for the replay seabright..take care and god bless
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Old Mar 31, 2013 | 04:57 PM
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Default coolant flush

Originally Posted by TommyFox
Use Evan's coolant and never have to replace it again or worry about corrosion. Yes it is expensive but so is a heater core replacement if you can't do the work yourself.
thn tommyfox 4 the info..take care and god bless.
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