Found in garage one bottle of G12 plus plus. Does it  really have exp date? Its 12.2016, but can I use it? I need to put just little bit in my car and Its already mixed with water 1:1.

Tnx

According to Prestone on this page:   http://prestone.com/learn_more/frequently_asked_questions?select_region=1

 

Q:

What is the shelf life of Prestone^® Antifreeze/Coolant?

A:

If the product is still in the original sealed container or has not been diluted with water then it has a shelf life of many years.

 

I suspect the corosion inhibitors present in the antifreeze might deteriorate when in use, but that shouldn't happen if it isn't used. Not sure how diluting with water would affect it's shelf life.

 

You can test the mix you have by putting it in a plastic container and leaving it in a freezer overnight to see what happens.  Of course it all depends what winter temperatures you have in Serbia!

Well I put it like 300 grams more or less, and I think it will be fine for now.

Max temperatures are around  -18c but aproximately -12c or -15c in last years.

So if God permit I plan to flash coolant on spring when I do service, but last time I had flush it I forgot to take pictures...so if anyone remember wher is plug drain? Does someone have picture?

Oh yea, tommorow I will test it with stick how much temp can it take..