What type coolant should I be using to top-up my coolant reservoir tank ?

[kidofthe80s]

Hello There

 

Was giving my Z and quick inspection this morning and notice the coolant in the reservoir tank was below the minimum mark.

 

Any advice on what type or brand of coolant should I be topping up my reservoir tank with ?

 

Read previous posts and it looks like folks use genuine Nissan coolant L248 Premix ? Is this OK for a 2005 Z ? What a typical cost of bottle of this coolant ?

 

For reference the coolant appears to be a mixture of green/blue in color.

 

Thanks for your help in advance. Kidofthe80s

[ZMANALEX]

You should really top up with similar to what is in the system at the moment.

 

However L248 is what Nissan recommend and is circa £20.00 for 4 / 5 lts.

[Tricky-Ricky]

If its only a little below the mark, then it wont hurt to top it up with water, but if its empty then a mix would be better, pretty sure that green and blue can be mixed, so its up to you.

[Darkside]

Jap performance Ltd have told me that the Zed requires green only and that no colours should be mixed due to the chemical makeup of the individual products.

[Tricky-Ricky]

Green and blue can usually be mixed, they are silicate and phosphate based, whereas OAT and HOAT which are organic acid type and usually red cannot be mixed with other types.

[Ekona]

^^^ That.

[kidofthe80s]

Thanks for the advice all.

 

Will be popping down to the local Nissan dealership to see if they have any in stock.

[EcoFriendlyAL]

Does low coolant in the header tank mean there is a leak somewhere or does the 350Z use a certain amount of coolant every X amount of miles?

Cheers

AL

[Ekona]

Leak, they shouldn't use any coolant at all.

[ZMANALEX]

Coolant level should only be checked and topped up when cold as hot and cold levels will be different.

Edited July 10, 2016 by ZMANALEX

[bytespc]

not hijacking the topic as its sort of relevant , has anyone used the waterless coolant as a replacement ?, I know its a mare to do as you have to flush the old stuff out and then run a decontanament before you put in the coolant but then its for life .

[Richf]

not hijacking the topic as its sort of relevant , has anyone used the waterless coolant as a replacement ?, I know its a mare to do as you have to flush the old stuff out and then run a decontanament before you put in the coolant but then its for life .

 

I looked into it but dont see any benefit in fact there are many reports that its not as effective at cooling

[Tricky-Ricky]

When i had a look at this, i discovered that a lot of cars seem to run higher coolant temps, which i suppose backs up the claims that it has better temperature transference properties, but also seem to indicate that the cooling system needs a bit of a revamp to use it effectively, personally regardless of filling for life, it also gives you no chance to periodically check the state of the system by draining or topping up.

[Ricey]

Leak, they shouldn't use any coolant at all.

Or evap. Could be a dodgy pressure cap

 

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