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leongster Profile
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Date Registered: 07-2007
Location: Singapore
TOTAL POSTS: 46
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Re: Coolant levels


It's very important to use de-ionised water or distilled water in your radiator mixture.

I use de-ionised battery water.

As for the type of coolant, it's best to get the correct spec item from Nissan - as it is probably specially formulated for aluminium engines.

(Yes, there is a difference between coolant formulations used in iron block/alu heads and all-alu engines.)

Avoid using BMW coolant, as some batches have been found to produce high wear in the water pump bearing.

Also, know that many aftermarket coolants are diluted, which makes it hard to obtain the proper 50-50 ratio used in hotter conditions.




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eddie


2004 X-trail 2.5 Auto.
13/Oct/2007, 12:42 pm Link to this post Send Email PM   Send Private Message
 
bluexy Profile
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X-TRAIL ENTHUSIAST
 


Date Registered: 05-2007
TOTAL POSTS: 125
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Re: Coolant levels


hi all i asked my nissan dealer about changing the coolant in my exy when i asked do they use distilled water or tap water they told me tap water.if i want distilled water its going to be expensive.distilled water is not expensive.so which is best to mix with the coolant and for the cooling system tap or distilled water?tap water does not sound right.when i have a flush myself in the past ive been told to use distilled water because tap water can cause rust in the system in the long run.
24/Sep/2008, 10:11 am Link to this post Send Email PM   Send Private Message
 
jalalski Profile
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Date Registered: 02-2004
Location: SUTHERLAND, SYDNEY
TOTAL POSTS: 29094
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Re: Coolant levels


There are two camps who would argue that using tap water to flush the system is fine and won't cause any harm to your engine, and another camp who would state that for an extra 2 bucks or so for 4 litres of distilled water why not use distilled water instead, so it is really up to you if you want to spend a bit of extra money and have that peace of mind.

Castrol DIY Guide suggests using tap water for flushing.

Personally, I don't mind the dealer flushing the coolant with tap water, as long as they use the genuine Nissan coolant and do NOT mix it with any water when filled-up.

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24/Sep/2008, 10:51 am Link to this post Send Private Message MSN Blog
 
Robbo0001 Profile
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BANNED USER

Date Registered: 07-2008
Location: Brisvegas, Australia
TOTAL POSTS: 1063
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Re: Coolant levels


Drained, flushed (twice with tap water after using a descaler) and refilled the Exy chasing a coolant leak today. Interesting fact was that Nissan Service sold me 3 x 1 litre bottles of L248 Coolant (part number 120120 LLC001)) as the Nissan part for the L2N coolant. It is not premixed, and is allowable at any value between 33 percent and 50 percent. They RECOMMEND putting 3 litres of coolant in (for a 7.1 litre coolant series 1 Exy), filling with tap water, and topping the resovoir with tap water as required until next coolant interval change.
This sound similar to anyones "home service" experience?
Cheers


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Dave
99 GU Patrol 2.8TD
Ex-2002 T30 TI Xtrail
8/Jan/2009, 9:35 pm Link to this post Send Email PM   Send Private Message
 
Robbo0001 Profile
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BANNED USER

Date Registered: 07-2008
Location: Brisvegas, Australia
TOTAL POSTS: 1063
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Re: Coolant levels


Found my leak on Sunday after watching the thermostat hit the roof. The two water pump mounting bolts were slightly loose and leaking coolant down the threads onto the exhaust and aircon compressor. Couldnt see it without pulling of wheel arch trim, bash plate and alternator.
Hopefully fixed, but will keep an eye on it.
To remove the alternator completely, (disconect battery, remove alternator positive and connector)... then undo and remove the alternator mounting bolts completely and sit it low in engine bay, then undo and remove the alternator shroud .(all 14mm heads) Otherwise the alternator cant be pulled out as there isnt enough room. Make sure you put the shroud on first when refitting....wont go on otherwise!

Changed the belt thanks to Eggins in the Belt thread
quote:

Dayco part no. for Xtrail is: 6PK2250


Definately live up to the "serpentine belt" theory....I needed a picture to get it on as well.
The car is running cooler by a fair bit so far, purely because of the new belt I believe.
This is for the T30 QR25DE 2.5 engine.... emoticon

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Dave
99 GU Patrol 2.8TD
Ex-2002 T30 TI Xtrail
2/Feb/2009, 9:18 pm Link to this post Send Email PM   Send Private Message
 
Robbo0001 Profile
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BANNED USER

Date Registered: 07-2008
Location: Brisvegas, Australia
TOTAL POSTS: 1063
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Re: Coolant levels


Long winded but finally finished...
after trying the "easy way out" I had to bite the bullet and admit my water pump gasket was shot. As previously mentioned the drivers wheel trim, bash plate if fitted, alternator and shroud have to come out....as well as removing the exhaust manifold nuts and dropping it all forward, removing the 4 aircon compressor bolts and suspending the compressor with a belt...and rounding off the 4 high tensile bolts via the pump into the block. (everything is either 12mm or 14mm which makes it easier....a ratcheting ring spanner is a must!)
The end result was discovering that the pump had a gasket made of Ultra Blue and cardboard...not good.
Made a gasket out of 2mm gasket paper and reinstalled..with new bolts and loctite. Done 150 kms today and no movement on the pure water and left over coolant I am running til tomorrow.
Pressure tested no worries and a power flush tomorrow at Natrad Enogerra and put in new coolant/water at 50 percent.
Hopefully this is it..... emoticon
Better than a head gasket...even better than a stuffed heater box in the end..cost me 6 hours of labour to myself and another 30 bucks of coolant

EDIT better add that this is an aftermarket vehicle with 130000km...new engine installed at 100000 by previous owner. So his mechanic was a d#$khead and this doesnt reflect all QR25DE donksemoticon
 

Last edited by Robbo0001, 6/Feb/2009, 11:47 pm


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Dave
99 GU Patrol 2.8TD
Ex-2002 T30 TI Xtrail
6/Feb/2009, 11:39 pm Link to this post Send Email PM   Send Private Message
 
plum163 Profile
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X-TRAIL NEWBIE
 


Date Registered: 01-2010
TOTAL POSTS: 4
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Re: Coolant levels


I'm currently in the process of flushing my coolant system. However, i am having some trouble draining the entire system, particularly the head/block. When i drain the coolant from the drain plug in the bottom of the radiator i can only get about 4L of coolant out of the engine before the thermostat shuts and holds coolant in the top of the engine. I can see from the manual where the bleed bold is in the block and i can see it from underneath the car but can any one tell me how you actually undo it? I can get a 14mm socket onto the bleed screw but my hands are to big to get in there and undo it. It is very tight. Only unless my arms were about 20mm in diameter and i had and extra 5 elbow i cannot see how to undo it with out taking off the intake manifold.

For the record i am working on a 2001, 2.5l QR25DE engine.
25/Jan/2010, 11:26 pm Link to this post Send Email PM   Send Private Message
 
cooch t31 Profile
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X-TRAIL HOLIC
 


Date Registered: 06-2008
Location: Blue Mountains, NSW
TOTAL POSTS: 5966
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Re: Coolant levels


You could probably disconect the coils from the spark plugs and turn the motor over without it starting.
This should pump the majority of the water out of the head.

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Tony X-891c

HERE is my D22 Navara
HERE is my old 2008 T31, ST Series1

26/Jan/2010, 5:45 am Link to this post Send Private Message
 
mgfiest Profile
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Date Registered: 09-2009
Location: Leamington, Ontario, Canada
TOTAL POSTS: 404
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Re: Coolant levels


you can take the intake rad hose off, insert a garden hose in the engine side. take off the bottom hose connection. make sure you have a big enough container to catch the old stuff... turn on the water... when you see water coming out you have flushed it out.

it works for me...

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Michael
X-1400
2005 SE Red,Auto, 2.5l, Cosmo Racing CAI, AlphaMirror Auto-Dimming Mirror, RedlineTuning Gas Hood Struts, Rear Brake Decal, Modified Centre Armrest


26/Jan/2010, 7:22 am Link to this post Send Email PM   Send Private Message MSN
 
jalalski Profile
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Date Registered: 02-2004
Location: SUTHERLAND, SYDNEY
TOTAL POSTS: 29094
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Re: Coolant levels


Chris,

Just follow the DIY Guide posted HERE

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26/Jan/2010, 8:01 am Link to this post Send Private Message MSN Blog
 


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