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4.8 GRX Radiator Failure

Engines and Engine Systems

Re: 4.8 GRX Radiator Failure

Postby Tinus lotz » 15 Jan 2017 15:46

Jip i do you can speak to marino he has some nice ones avalable :salute:
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Re: 4.8 GRX Radiator Failure

Postby ricster » 16 Jan 2017 09:21

Wilkie wrote:Just a thought...who as ever changed the anti freeze on a regular basis.......???
There has to be a reason why there are so many Patrols pop their radiators..does the antifreeze changes its character after a certain age and generate more steam or or or ???
Just putting it out there..


Definitively a good idea to drain and change. I just did mine after 100 000Km. The coolant still looked very good ( nice clear blue tinted water came out ). I replaced with the antifreeze I originally got from Silvertons Radiators ( Nissan original price is ridiculous ). I bled the system properly and noticed a few mm difference on the dash temp gauge.

IMPORTANT !!!!!!...... stick to the mixing instructions !!!!! Rather slightly over dilute than under dilute as the coolant, if too strong, can have very negative effects on the metal in the motor !!

My system with the bigger radiator takes close on 13-14L of water. The coolant I use is a 50/50 mix ratio, but only used 6 bottles so am a little under the 50/50 mix.
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Re: 4.8 GRX Radiator Failure

Postby Michael » 16 Jan 2017 10:17

The original Nissan antifreeze states on the bottle to mix it 30% antifreeze with 70% tap water. they are very strong and probably one of the best on the market.

But yes as Cedric mentioned.....they are MADLY priced at Nissan and you really find it hard to swipe your card on the purchase. So on a system flush, you need about 4,5L so 5L is fine but it is going to set you back almost R700 :surprised:
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Re: 4.8 GRX Radiator Failure

Postby offroadbiker » 16 Jan 2017 10:23

Yep, dropped R700 in November for new anti freeze at Nissan just before the Rust de Winter trip, now I would like to take the radiator out for a clean but don't want to spend that again.... :redface:
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Re: 4.8 GRX Radiator Failure

Postby ricster » 16 Jan 2017 10:38

:rolling: :rolling: :rolling: :rolling: ... Dirk, I have the same dylema.... I forgot to change the radiator hoses when I did the coolant flush..... I think I'm going to make a plan to somehow drain the water out into a container, change the hoses and then filter the coolant before putting it back.
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Re: 4.8 GRX Radiator Failure

Postby Michael » 16 Jan 2017 10:49

ricster wrote: I think I'm going to make a plan to somehow drain the water out into a container, change the hoses and then filter the coolant before putting it back.


I cannot see why not. Coolant is too expensive to just discard and if you filter out any dirt that came into the bucket your antifreeze should be fine. I have done this before on my own and had no problems.
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Re: 4.8 GRX Radiator Failure

Postby cjvp » 04 Feb 2017 18:25

Got a radiator from Graham for R4500.00 and a viscous fan from Imperial Nissan Menlyn for R4300.00. Patrol fixed up again. Received very good service from Riaan at Imperial Nissan Menlyn. Had no problem installing the radiator not sourced from them. Thank you to forum members for the interest and help.

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Re: 4.8 GRX Radiator Failure

Postby cjvp » 04 Feb 2017 18:27

New radiator out of the box I must add.
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Re: 4.8 GRX Radiator Failure

Postby Tinus lotz » 04 Feb 2017 18:32

Happy to hear you are going again :thumbup:
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Re: 4.8 GRX Radiator Failure

Postby biggles » 05 Feb 2017 08:16

Did you not get a temperature warning before it popped?
With great Power comes Great Fuel Consumption
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