Anti-freeze

Brrrrr-r-r-r
its now getting a tad on the cooler side and I have dum question (or two):

What's the differance between the blue and green antifreeze?
Which is best to use on a P38 DSE?

Blue skies
(well, hopefully for a little longer)

Hi i would say its all down to different inhibitors in the coolant for different engine types, p38 were green disco 1 is green disco 2 is pink new range rover is blue new disco is pink freelander td4 is pink and older 1.8 freelander is green,as long as you have some antifreeze in some is better than none but try and go for whats rcomended,tiga