Always get a bit jittery when it comes to winter and plumetting
temperatures so looking to change my coolant sooner rather than later.

I have green coolant in there at the moment which I know means diddly
squat as to what it is actually made up of.

Whether it be the standard, erm, MEG (typically green/blue) or MEG+OAT
(typically red) is there any reason you can think of why I shouldn't be
able to just drain and flush the system and fill up with the red MEG+OAT
longlife stuff?

Nissan Primera 1.8, 2001, Petrol, GQ18DE Engine

Simon Dean wrote:

Well, I just top mine up with whatever type I happen to have. Please,
someone, tell me I'm wrong.

Rob Graham

Rob Graham wrote:
Ordinarily, I'd quite probably agree. But some schools of thought
suggest the rust inhibitors etc get used up. And of course, if you don't
know what's in there, how can you top it up?

Course Im not an expert my any stretch of the imagination so don't know
what Im doing.

Simon Dean wrote:
the anti cold properties change very little with age, but the anti corrosion
drops after a couple of years. From the age of your vehicle it may well be
on original stuff (so a nissan dealer might be a good place to check out
the correct stuff)

If you are changing it then a complete wash out twice (drive the car for a
bit to rinse all round) and a refill with a good quality anti freeze will be
fine.

Or if you CBA then let out a couple of litres and top up with a universal
long life, such as Prestone, which they say can be mixed with anything.