Best Answer

Answer Obtain a prestone flush kit and a container of fast acting flush plus 2 gallons of antifreeze. You will be splicing the tee fitting in your return heater hose ( the cooler of the two hoses), draining the existing coolant, filling with straight water and flush to the radiator, running the engine for ten minutes with the heater on full then hooking up your garden hose to the adapter that comes with the kit. After you have run it the clean water thru it, the radiator and engine will be nice and clean; then drain the pure water and add 50/50 antifreeze and water mix and your done. I hope this helps you. Mark

Following the above procedure, I would recommend adding the first gallon of straight antifreeze in without mixing with water because you will not have drained the engine block by simply draining the radiator. So you still have at least one gallon of clear water in the block to mix with one gallon of straight antifreeze. Add the rest with a 50/50 mix for protection down to -34 degrees F.

User Avatar

Wiki User

โˆ™ 2014-09-22 11:42:23
This answer is:
User Avatar
Study guides
See all Study Guides
Create a Study Guide

Add your answer:

Earn +20 pts
Q: How do you flush the coolant system in a 1969 Chevy Corvette?
Write your answer...
Related questions

How do you flush the coolant system in a 1995 corvette?

Remove the bottom hose from your 1995 Chevy Corvette radiator. Allow the coolant to drain out. Put a hose into the top of the radiator. Run water through the radiator until it runs clear.

Coolant flush 96 z34 Monte Carlo?

A coolant flush on a 96 Z34 Chevy Monte Carlo helps greatly with increasing the efficiency of the cooling system. It removes buildup and contaminants from the system.

What can be done about rust substance in coolant reservoir of 2001 Chevy Malibu?

Clean the reservoir and flush the cooling system.

How do you flush the coolant system in Chevy silverado 2000?

go to the auto store and buy some prestone flush. instructions are on the back. basically you drain your radiator, pour in the flush, refill the system with water, run the engine with the heater on high for about 15 minutes, then drain the system again, refill it with 50/50 coolant.

2000 Chevy truck heater not working?

you probably need to flush the coolant system. GM claims that the coolant is good for a ridiculous number of miles, but it is not so. The coolant breaks down and forms large clumps which will clog up the heater core. You may need to flush several times to get it all out.

Where on the engine block of a 1987 Nissan maxima are the coolant system drain plugs and after you flush the system do the drain plugs have to be replaced?

Ive never heard of draining coolant plugs except on a diesel engine . Once you drain the coolant and flush the system it should be fine

If you are replacing bypass hose for Nissan Altima 2001 do you have to completely flush the coolant system?

You don't have to but it is a good opportunity to flush the system.

How do you flush coolant system on blazer 2001?

You can purchase a coolant flush kit from your local auto parts store for less than $10. It comes with directions.

Flush coolant system on 2002 cadillac northstar engine?

DO NOT FLUSH the coolant system on a northstar. Drain the coolant, replace with 50/50 Dexcool and fresh clean water, and you're good to go. Especially NEVER NEVER buy a "Coolant Flush" at a dealer or quicky-lube place. All you'll get is the previous sucker's engine gunk pumped in to your engine.

Flush radiator coolant 1997 Honda Accord?

Coolant is flushed from the radiator of a 1997 Honda Accord by opening the petcock and allowing the system to drain. The petcock is then closed, the system filled with water, and a flush added to the radiator to cleanse the system.

How do you flush the cooling system on a 2003 Chevy Trailblazer?

If you must do it yourself ensure that you drain and capture all the old coolant. There is not a drain cock on the system. You must use the rad hose disconnect. The dex coolant does not like air. It is well worth your while to get a shop with an evacuation flush unit to replace the coolant. This method pushes out the old coolant with the fresh stuff. Effective and mixed to the proper proportion to maximize the long life of the Dexcool.

Flush the Coolant?

form_title=Flush the Coolant form_header=Keep the cooling system running properly by regularly flushing and replacing the fluids. What type of coolant do you normally use?=_ How long as it been since the coolant has been flushed?=_ Have you had any overheating problems?=_

How do you flush the engine coolant system on a Kia Spectra?

To flush an engine of coolant in the engine of a Kian Spectra refer to the manual. Auto manuals can be purchased at auto part retails or in bookstores.

How much does a coolant system flush cost at jiffy lube?

1,000,000,000 euros

Is it safe to put conventional coolant in a Chevy with dex cool?

Putting non dexcool compatible coolant in the cooling system can cause problems and sludgy buildup in the cooling system but Most coolant you buy these days will say on the bottle "compatible with any colour coolant " or compatible with dexcool" and if it doesn't you can easily find a brand that will be compatible with dexcool coolant at any automotive store. If you have allready mixed the coolant with non compatible coolant I recommend to flush ur coolant system and use a dexcool compatible replacement coolant flushing the coolant system every few years is a good practice even if you have 5 year life coolant..

What type of coolant does a kx85 need?

A KX85 just needs regular green premixed engine coolant. To replace the coolant in the engine system, simply drain the current coolant and refill. There is no need to flush the system before replacing.

Why would a 1991 chevy. Camaro get hot after replacing the t-stat and the coolant in it?

Did you bleed all air from the system? Did you check the operation of the water pump? Did you flush the system thoroughly? Did you accidentally install the thermostat upside down?

Can you change from green to red auto coolant?

If the Red Coolant meets the specifications required by you vehicle manufacture you can perform a coolant flush on you system before replacing with the new coolant type.

Can the water pump leak if you do a coolant flush?

Yes, the water pump can leak if you do a coolant flush.

What type of antifreeze and coolant flush do you need for 1997 Buick century?

dex - cool orange coolant ,any coolant flush

How do you flush the radiator in a 1999 Pontiac Grand Prix?

The radiator on a 1999 Pontiac Grand Prix is flushed by draining the coolant, filling the system with water, adding a liquid flush to the system, and running it for a few minutes. The system is then drained, flushed with fresh water, and refilled with coolant.

2002 Toyota Echo do you need a coolant flush?

To flush the coolant in a 2002 Toyota Echo you will need to drain it first. Flush with fresh water and then refill with coolant and distilled water.

How do you reset the low coolant light on 97 Pontiac grand prix?

there is no reset you have replace the low coolant sensor and flush cooling system and use dexcool coolant.

How do you change engine coolant on 2004 Chevy Impala LS?

its best to take it to a gm dealer, the dex-cool antifreeze leaves a lot of gunk make sure to have them flush the entire system.

What is the best way to flush coolant on a 1998 GM 4.3 pickup?

drain all coolant from system. flush with water until clean water is comming out of engine. fill rad with water and run engine up to temp. this should help remove the antifreeze from the engine. drain water out and run water through system again until clean. add new coolant to system. should be good. use garden hose to flush out system