Antifreeze top up
Posted: 22 Oct 2010, 08:48
As winter is here i tested my coolant strength and it needs to be stronger.My question is,whats the best way to drain off some coolant so i can add some neat antifreeze. Thanks
For a top up like this It's just a matter of choosing the easiest hose to get at and then controlling the amount that drains off.
Just be sure to use an antifreeze compatible with the one already in the system.
As a general rule: the darker colours ie: Blue/Green are the older type whilst the pink/orange/yellow/purple are the newer organic acid long life type. If you are not sure you may need to drop the lot....flush and refill from scratch.
Wasserboxers (because of their engine design) are more critical and need a 50:50 % mix (antifreeze/water), other engine types are fine with the normal 35 - 40% mix. (antifreeze/water) which will still give something like -20C protection.
Martin