It's okay to add Dexcool, you just won't be getting the benefit of the
five year longevity it offers.  It is ethylene glycol based and
phosphate free, so it is compatible.

There are some green phosphate free antifreezes out there, but I would
completely drain, flush, and fill with Dexcool to start with a known
commodity.  This means removing hoses at the radiator and flushing all
old coolant out. 10% of the old stuff left behind will neutralize the
longevity of the Dexcool.

It's worth it!

Katy wrote:
>
> Hi volks,
>
> I have "green" coolant in my 89 Westy.  Is this a bad thing?  I heard
> someone mention that green is not the phosphate free type.  Yet the PO
> was very adamant in telling me about only using the right coolant.  I
> went to three local stores here to buy a phosphate free, ethyl glycol
> type to keep with me, yet I only could find Dex Cool "orange.  Is there
> a "green brand?  Is it OK to mix the orange and green?
>
> Thanks,
>
> Katy
> 89 Westy Jezebel

--
Stuart MacMillan

'84 Westy
'65 MGB
'73 MGB GT