flush radiator VY V8

[lowrider]

hi all

I want to replace the long life coolant , car is 5 years old whats teh best way to flush a VY V8 ? drain via lower hose ? any tips or tricks eg bleeder screws anywhere ? keen to get it done on the weekend want to know anything before i start

thanks

[DVSV8]

i want to do this to mine as well. i have a max ellerys manual, might have a look and see if it tells me. will scan it if i can find it.

[lowrider]

Alright i done this this afternoon , easy as 123 ,no dramas
This is how i done it so I'll whack the steps in here to share:
1.undo lower radiator hose with pliers (at the thermostat housing)
2.drain coolant
3.remove thermo housing /thermostat (2x10mm bolts)this drains the block out
4.pressure(garden) hose in and flush block until clean water comes out
5.pressure hose in overflow tank ,keep there until clean water comes from the block
6.pressure hose in lower radiator hose ,keep there until clean water comes from block - all flushed
7. inspect then refit your thermo housing,lower radiator hose
8.fill reservoir tank with 5 litre bottle Holden long life (red) coolant -use the genuine stuff , then fill with clean hose tap water until cold level mark , start engine with heater on highest heat ,check for leaks,take for a short drive until operating temp , switch off ,check for leaks,let cool completely and recheck level to cold mark if required . All done
9. Have a deserving beer of your choice .

[adamc11]

Have problems with air getting stuck in places?

[lowrider]

not needed , i found out the ls1 have a vapor pipe attached to rid the engines of air so no need for any special bleeding .Run the heater on high as stated tho

[andyman]

they have a header tank which is the highest point of the cooling system which eliminates the need for bleeding

[lgr_lgr]

Hello,
When you say remove the thermo housing,do you need to glue in a new gasket for the thermostat?

[highflya]

hey guys, i did a coolant change on the wknd. and swapped over to the green from the pink coolant. But i've missed a step inbetween. I didn't drain the block. What damage could possibly occur? Is it best to redo the coolant again?

[Benboy]

Suggest you check the handbook for the correct specifications of coolant suitable for your motor. Possibly red !!!

[Farlig]

red holden coolant is suggested, it is fully compatible with FULL alloy engine and wont have any negative effect like corrosion and rust.

[alien-]

Once you flush your coolant system and use water to clean it you'll want to put pellets in! I think Holden says 2 or 3 in the radiator. All it is is radiator stop leak which coats the aluminium which can be eaten away by coolant within about 3 minutes! That's called neutralising the system. Even with the long life coolant holden says to use the pellets.

If you want some just go down to a auto shop and ask for radiator stop leak.

[howepower]

Originally Posted by highflya

hey guys, i did a coolant change on the wknd. and swapped over to the green from the pink coolant. But i've missed a step inbetween. I didn't drain the block. What damage could possibly occur? Is it best to redo the coolant again?

the coolants will have a reaction annd cause more trouble than not having coolant at all it has a chemical reation i have seen rads and pumps killed in weeks if its not done correctly

[howepower]

Originally Posted by lowrider

Alright i done this this afternoon , easy as 123 ,no dramas
This is how i done it so I'll whack the steps in here to share:
1.undo lower radiator hose with pliers (at the thermostat housing)
2.drain coolant
3.remove thermo housing /thermostat (2x10mm bolts)this drains the block out
4.pressure(garden) hose in and flush block until clean water comes out
5.pressure hose in overflow tank ,keep there until clean water comes from the block
6.pressure hose in lower radiator hose ,keep there until clean water comes from block - all flushed
7. inspect then refit your thermo housing,lower radiator hose
8.fill reservoir tank with 5 litre bottle Holden long life (red) coolant -use the genuine stuff , then fill with clean hose tap water until cold level mark , start engine with heater on highest heat ,check for leaks,take for a short drive until operating temp , switch off ,check for leaks,let cool completely and recheck level to cold mark if required . All done
9. Have a deserving beer of your choice .

for starters the procedure is incorrect people you need to pull the heater hose off and the upper hose to flush properly and do it without the thermostat