MK5 Golf GTI

All Things Mk5 => Mk5 General Area => Topic started by: Chris92 on May 27, 2015, 10:31:33 am

Title: Coolant ratio
Post by: Chris92 on May 27, 2015, 10:31:33 am
So around two years ago I did the timing belt and water pump and put fresh vw coolant in once I flushed the system, anyways today I'm going to tackle the main thermostat so il be losing some coolant. Can I just pour my two 1.5L g13 coolant in until it's full and add water after to top up once it's bled? That's if I need to top up with any water anyways. See I'm not sure how much will run out, say it 3L runs out could I pour one g13 bottle in and top with water or pour my two bottles of g13 in? Just a little confused as I will not be flushing the whole system.
Title: Re: Coolant ratio
Post by: lukemk5gti on May 27, 2015, 12:38:39 pm
Don't use tap water. Too many minerals etc. that'll scale your radiators internals. Get distilled water!
Title: Re: Coolant ratio
Post by: Chris92 on May 27, 2015, 01:26:35 pm
Cheers for the heads up but I already know that and got the distilled water sat there waiting  :happy2:
Title: Re: Coolant ratio
Post by: dazza on May 27, 2015, 01:46:10 pm
I bought G13 from the stealers and it said do not dilute.
Title: Re: Coolant ratio
Post by: Chris92 on May 27, 2015, 02:34:28 pm
I bought G13 from the stealers and it said do not dilute.

Thanks, il just put it all in then if it needs a top up il add a little water. Surely having to much anti freeze won't hurt?
Title: Re: Coolant ratio
Post by: dazza on May 27, 2015, 02:39:58 pm
This was a 5L bottle. Don't know if that makes any difference.
Title: Re: Coolant ratio
Post by: dazza on May 27, 2015, 02:43:28 pm
Don't want to give bad info. Surely there will be dilution ration on the bottle.
Title: Re: Coolant ratio
Post by: bacillus on May 27, 2015, 04:38:23 pm
Neat G13 will be fine if you live in Siberia...   :wink:

Title: Re: Coolant ratio
Post by: Chris92 on May 27, 2015, 04:45:03 pm
Neat G13 will be fine if you live in Siberia...   :wink:

You'd think I did live their, summer, what's that? It's lashing down and freezing, not far off finished tho and I was expecting the job to be a pain but it's been easy don't know what people are on about     :P

Not much has come out anyways maybes 3 litres I'd say. Going to pour 2 litre of g13 in then top off with water. I've got a anti freeze tester.
Title: Re: Coolant ratio
Post by: dazza on May 27, 2015, 05:59:44 pm
The one i bought is already diluted concentration 40%

The main stat is easy if you get the two triple square bolts holding the hard pipes. I found them a little late into the job.

(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fdaz.co%2Fimages%2F20150527_184936_resized.jpg&hash=b1fa84a6df6d5e5978c633e64b23077f146c7a68)
Title: Re: Coolant ratio
Post by: ROH ECHT on May 27, 2015, 08:02:58 pm
Stick with dealer blend...run it straight as it is pre-diluted and made for this engines alloys.
Title: Re: Coolant ratio
Post by: Chris92 on May 27, 2015, 08:57:26 pm
Looked on the bottle and I'm 99% sure it's neat. Anyways in the end I put 3L of g13 in and a little bit of distilled water. Bled it, when for a run got back topped it up a tiny way and now it's done, heaters working etc. engine temp stayed at 90 the whole way even when coasting  :happy2: unlike before.

My anti freeze tester reads -50c , think I should drop a little coolant out and top with water or just leave it, can too much anti freeze cause any damage?

Mine must be neat coolant, your says protection up to -25c I've got double that according to this tester.

Cheers for the help
Title: Re: Coolant ratio
Post by: dazza on May 27, 2015, 10:19:30 pm
Mine took nearly the full 5L to fill it. 3 litres and 2 litres water should be fine. I think its supposed to be 1:1. Hopefully someone who knows better will chime in if i'm wrong.
Title: Re: Coolant ratio
Post by: Chris92 on May 28, 2015, 06:28:37 pm
Been in touch with the seller and it's 100% neat as I thought, apparently the diluted version is discontinued.
After looking around on the net it says to use a ratio of 1:1. Il just drop a little out and add water then check with the anti freeze tester, maybes aim for -30c. Just don't want to have too much anti freeze in incase that can cause problems in itself.

Cheers