Alloy rad install + flush

narita · Postby **narita** » Mon Mar 18, 2013 10:00 am

So i noticed my radiator us browning, and have ordered a new alloy asi replacement.

The thing i would like to know is should i flush with the old or new radiator?

As i would prefer none of the old rad coolant stay in the engine only to make its way in the new radiator.

shuey · Postby **shuey** » Mon Mar 18, 2013 10:53 am

.. i know this is not answering your question (sorry!), but do you happen to have a photo of your browning radiator? I had a look at an NB8B over the weekend and was looking at the rad but wasn't sure what the normal color it should be. It wasn't black fo sure, but just had a tinge of light brown. thanks!

emily_mx5 · Postby **emily_mx5** » Mon Mar 18, 2013 1:06 pm

The browning of the plastic has nothing to do with the condition of the inside of it.
So just drain the coolant, take the old rad out, put the new one in and refil the coolant.
If the coolant is still nice and green and new you can reuse it, if not buy a new batch.