Antifreeze Spec

[Rickgt]

Hi All,
Can anyone help me with some advice. I have a 73 MK2 manual, It has come to the time where I need to flush out the water works and replace the antifreeze. I read that I need to put antifreeze in that conforms to BS3151 and BS3152, I asked a friend to pick me up some on his way home from work but it is BS6580. Is this the modern day equivalent and is ok to use or must I find some BS3151 or BS3152
Cheers

[Goldstar]

Decent quality Blue glycol, I wouldn’t fret about the numbers. BS3151 was the 1959 standard 6580 was the 1992 standard. Bluecol is good

[jbuckl]

Stags were developed to use ethylene glycol.
No need to use anything else.

[StagJonno]

It's preferable to use what was in there before to avoid compatability problems. What colour was the coolant that was in there? If it's pink or orange, it's indicating an "OAT"-type - more modern and reckoned to last 5yrs or so. However, there are folk who've reported that it doesn't mix well with the ethylene glycol type (typically blue or green), forming a jelly. The system needs a thorough drain and flush to change between the two types..

[brett_smith]

Ticket I use Penrite 350000 not the premix. I think you’ll find it works very well

[Rickgt]

Hi Guys, thanks for all your advice, it was a great help