Astra Owners Network banner

1 - 5 of 5 Posts

·
Registered
Joined
·
5,034 Posts
Discussion Starter · #1 ·
Going to be giving the car a coolent change, looked online for tips ect and there's alot lol.. For example

Stick a Hose pipe in the expansion take and let it flow through the car

Always make sure caps off to stop air lock

Fill up with water, turn heat on full and start the car and re drain?

Buy decent anti-freeze (I thought it was all the same)

Take bottom hose off the rad instead of the valve?

What should I do? I'm also fitting a new expansion take as mines naffed
 

·
Registered
Joined
·
5,034 Posts
Discussion Starter · #2 ·
Anyone? :)
 

·
A.O.N - Approved Vauxhall Specialist (Anthony)
Joined
·
5,025 Posts
If you have been using the right anti-freeze in the system previously, there shouldn't be any need to flush the system through.

Vx anti-freeze is good stuff, and cheap on trade club. If you buy neat anti-freeze, it has to be diluted 50/50 with distilled water. Important to use distilled water as tap water can contain a lot of minerals which cause scaling up of the system.

The drain valve is the lowest point of the system, so should let most of the coolant out - more than taking the lower hose off alone.

When refilling, fill slowly until you top up to the line, then squeeze all of the hoses to work any air through.

Start up with the cap off, then keep topping up until the level stops dropping. Fit cap and run until fan cuts in.
 

·
Registered
Joined
·
3,928 Posts
Remember to slightly overfill if the car is fitted with a coolant sensor, it always reports low.
 

·
Registered
Joined
·
5,034 Posts
Discussion Starter · #5 ·
Ok. Is there any worries of the turbo? Should I make sure it's got water in the line before starting ect?

The coolent is really faint now where it's been topped up. I'll deffo use distilled water. Take it I can buy they from the shops? When draining it will that be allow water in the system or in the rad and sOme pipes only?
 
1 - 5 of 5 Posts
Top