Blue antifreeze turned green

cmm303 · Post by **cmm303** » Mon Mar 21, 2016 9:47 am

Drained old green coolant and refilled with blue 2yr stuff from Eurocarparts..

I reckoned it was thoroughly drained after replacing all 17 hoses, pump, stat and flushing rad and both heaters. Maybe 2 litres max of old left in.

In the first stage of bleeding, before running the engine the coolant in the jug (funnel replacement) started to turn green!

The coolant that I drained was almost a flourescent green but I know nothing about it as it came with the Bongo.

The LCA was a bit undecided about going off this morning even though expansion tank is full. Add it in here just in case it means anything, because I thought this a/f type didn't coat the screw.

The new coolant says it must not be mixed with type D a/f. I presumed that was the red stuff.

After bleeding the leftover in the jug is clear green, not cloudy.

Should I be worried?

haydn callow · Post by **haydn callow** » Mon Mar 21, 2016 10:21 am

The LCA is not supposed to go off if all is well.

Post by **Bob** » Mon Mar 21, 2016 10:45 am

Battery could be a bit low after sitting a while, this could upset the LCA.

cmm303 · Post by **cmm303** » Mon Mar 21, 2016 11:03 am

haydn callow wrote:The LCA is not supposed to go off if all is well.

possible air lock?
Wondered about voltage but not previously a problem after standing. Engine ran for nearly 2 hrs yesterday during and after bleeding.

PS. By "going off" I meant going silent.

Northern Bongolow · Post by **Northern Bongolow** » Mon Mar 21, 2016 1:55 pm

this is the one ive just bought from them, really good value, you can get concentrate and ready mix.
the thing for me is that its O A T technology.

http://www.eurocarparts.com/ecp/p/car-a ... &0&cc5_866

http://www.eurocarparts.com/ecp/p/car-a ... &0&cc5_866.

they even do 20 litrs if yer bongo leaks a bit.

cmm303 · Post by **cmm303** » Mon Mar 21, 2016 2:33 pm

Leak a bit? All those 34 new hose joints? Perish the thought!
That red stuff is only marginally more than the blue. Good deal! I bought one concentrate and one ready mix to give me 15l made up. Spot on for Bongo's 13l.

Fassi, thanks for tip about fact sheet. Didn't think of checking for fact sheet on flushing. [edit] just read the sheet and answered my own question about cold water. Great idea to avoid bleeding and get it for flushing out the old. Struggling to grasp how it achieves the right concentration when adding new antifreeze.

Post by **Simon Jones** » Mon Mar 21, 2016 2:50 pm

If you're going to changing to the pink OAT stuff you will need to do a really thorough flush as it doesn't mix well with glycol. I use Halfords Long Life which is good for 5 years.

mikeonb4c · Post by **mikeonb4c** » Mon Mar 21, 2016 3:42 pm

I'm pretty sure its normal for the blue stuff (ethylene glycol presumably) to turn green once diluted and heated in the cooling system. My lca is prone to the occasional murmour even after new screws were fitted. Suspect its viltage related

cmm303 · Post by **cmm303** » Mon Mar 21, 2016 4:01 pm

Simon Jones wrote:If you're going to changing to the pink OAT stuff you will need to do a really thorough flush as it doesn't mix well with glycol. I use Halfords Long Life which is good for 5 years.

definitely! I had read that colours and type aren't universally consistent. So wasn't happy that mine was showing traces of old.

cmm303 · Post by **cmm303** » Mon Mar 21, 2016 5:00 pm

mikeonb4c wrote:I'm pretty sure its normal for the blue stuff (ethylene glycol presumably) to turn green once diluted and heated in the cooling system. My lca is prone to the occasional murmour even after new screws were fitted. Suspect its viltage related

Prior to the cooling system transplant the LCA behaved impeccably, going quiet after its self test. My voltage isn't as good as it could be but has not caused any problems to date. Also this morning the LCA blipped when I switched the aircon on. May be the coolant change has highlighted an electrical problem that previously I was getting away with.

Post by **Bob** » Mon Mar 21, 2016 5:11 pm

New long life coolant can coat the screws, easily sorted with a small wire brush.

cmm303 · Post by **cmm303** » Mon Mar 21, 2016 9:50 pm

Blue / Green. Twitchy LCA aside. 20 mile test drive this evening was a resounding success

My gauge is modified and this was its normal position before new pump, stat, hoses, coolant and no. 1 stud fix:

And now:

Don't know what that means in degrees but gotta be good. Also a lot slower to rise on hills.
Guess we'll never know which bit made the difference.

Post by **Bob** » Mon Mar 21, 2016 9:54 pm

Cooling the engine down has done wonders for your fuel.

I'll get me coat.

cmm303 · Post by **cmm303** » Mon Mar 21, 2016 9:58 pm

Bob wrote: I'll get me coat.

no need Bob.

There's peeps queuing to give it to you

mikeonb4c · Post by **mikeonb4c** » Mon Mar 21, 2016 11:36 pm

cmm303 wrote:
Bob wrote: I'll get me coat.
no need Bob.

There's peeps queuing to give it to you

Bob doesn't even wear a coat as far as i know

Great news about the refurbished cooling system

Blue antifreeze turned green

Blue antifreeze turned green

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