does my car have engine oil cooler !! PIC & VID inside

Q8y_drifter · 09-08-2010, 08:27 PM

Just an FYI, the oil cooler above circulates coolant as previously mentioned to warm the oil when it's cold and cool it down when it's hot. It's not very efficient though and a separate aftermarket oil cooler does a much better job at it.

The hard lines go all the way to the heater pipe on the driver's side engine head. The other outlet for the cooler goes to another water pipe located right under the exhaust port on piston #6 on the driver's side engine block.

As far as which models got it, it comes on all VQ35DE although the pipe routing is different. It does not come on the VQ35HR and VQ37VHR in the US regardless of the model year. It DID however come pre-installed from factory to all G35's, G37's and 370Z's shipped to the Middle East and apparently Australia as well. I'm assuming there's more locations yet to be known.

The same oil cooler is also installed on all AWD G35's and G37's regardless of location.

Anyhow, below is a diagram from the FSM showing the routing of the pipes. This is on an HR which is identical to a VHR.

The image above shows the oil cooler/warmer system with all the associated water pipes circled in red. On cars that do not come with this system, water pipe #13 does not come with the small water outlet that connects to hose #11. As for the other water pipe #12, it does not exist and is instead replaced with a block off plate mounted straight to the engine block.

The picture below shows an HR block with no oil cooler/warmer. The upper water pipe has no 3rd outlet and the lower water pipe does not exist.

G Fo12ce · 09-10-2010, 03:35 PM

Quote:

Just an FYI, the oil cooler above circulates coolant as previously mentioned to warm the oil when it's cold and cool it down when it's hot. It's not very efficient though and a separate aftermarket oil cooler does a much better job at it.

The hard lines go all the way to the heater pipe on the driver's side engine head. The other outlet for the cooler goes to another water pipe located right under the exhaust port on piston #6 on the driver's side engine block.

As far as which models got it, it comes on all VQ35DE although the pipe routing is different. It does not come on the VQ35HR and VQ37VHR in the US regardless of the model year. It DID however come pre-installed from factory to all G35's, G37's and 370Z's shipped to the Middle East and apparently Australia as well. I'm assuming there's more locations yet to be known.

The same oil cooler is also installed on all AWD G35's and G37's regardless of location.

Anyhow, below is a diagram from the FSM showing the routing of the pipes. This is on an HR which is identical to a VHR.

^^ great info and pics, thanks. +1 rep

SoCal 370Z · 09-14-2010, 09:41 AM

Q8y_drifter,

Curious as to whether you can post the diagram with the radiator, and if you know the radiator fluid capacity specs? In Japan they have aftermarket radiators for our 370Z that are much larger and they tout them for better cooling. So I am wondering whether you have a larger factory radiator too? Thanks, and a great post on your part! rep point sent; rep point to OP too.

Q8y_drifter · 09-14-2010, 10:59 AM

Quote:

Originally Posted by SoCal 370Z

Q8y_drifter,

Curious as to whether you can post the diagram with the radiator, and if you know the radiator fluid capacity specs? In Japan they have aftermarket radiators for our 370Z that are much larger and they tout them for better cooling. So I am wondering whether you have a larger factory radiator too? Thanks, and a great post on your part! rep point sent; rep point to OP too.

The middle east spec Z's and G's are said to come with larger radiators but I can't seem to find any specific info regarding size or capacity. The FSM I have is actually US spec. I'm trying to get my hands on a ME spec FSM with no luck. I don't even know if we have a specific FSM for the ME.

Anyhow, the user manual states that the capacity for the cooling system is 9.6L/8.5qts plus 0.8L/0.75qts for the reservoir. This is for the VHR engine. The HR is slightly less.

Another interesting piece we have is a factory automatic transmission oil cooler (driver's side).

SoCal 370Z · 09-14-2010, 11:23 AM

Quote:

Originally Posted by Q8y_drifter

Another interesting piece we have is a factory automatic transmission oil cooler (driver's side).

Why does none of this surprise me any longer? It would be nice if Nissan would at least provide an avenue to purchase these parts in the US. The automatic transmission cooler is simply a great accessory for increasing the life of an automatic transmission. I'm sure Nissan's US PR department is past its quota of bullsh!t reasons for not having these items on US models. Thanks for the info and pic.

Vegitto-kun · 09-15-2010, 05:29 AM

My dif case is finned too.

09-08-2010, 08:27 PM	#1 (permalink)
Q8y_drifter Enthusiast Member Join Date: Mar 2010 Location: Kuwait Posts: 306 Drives: 08 Infiniti G35 5AT Rep Power: 15	Just an FYI, the oil cooler above circulates coolant as previously mentioned to warm the oil when it's cold and cool it down when it's hot. It's not very efficient though and a separate aftermarket oil cooler does a much better job at it. The hard lines go all the way to the heater pipe on the driver's side engine head. The other outlet for the cooler goes to another water pipe located right under the exhaust port on piston #6 on the driver's side engine block. As far as which models got it, it comes on all VQ35DE although the pipe routing is different. It does not come on the VQ35HR and VQ37VHR in the US regardless of the model year. It DID however come pre-installed from factory to all G35's, G37's and 370Z's shipped to the Middle East and apparently Australia as well. I'm assuming there's more locations yet to be known. The same oil cooler is also installed on all AWD G35's and G37's regardless of location. Anyhow, below is a diagram from the FSM showing the routing of the pipes. This is on an HR which is identical to a VHR. The image above shows the oil cooler/warmer system with all the associated water pipes circled in red. On cars that do not come with this system, water pipe #13 does not come with the small water outlet that connects to hose #11. As for the other water pipe #12, it does not exist and is instead replaced with a block off plate mounted straight to the engine block. The picture below shows an HR block with no oil cooler/warmer. The upper water pipe has no 3rd outlet and the lower water pipe does not exist. __________________ 08 G35 5AT Sedan \| Stillen CBE \| Invidia HFC \| Injen CAI \| Uprev Tune \| Akebono BBK \| Tanabe Coilovers \| Hotchkis Sway Bars \| GTSpec FSB \| Black Headlights & Grille \| Volk GT-F Wheels \| Hankook V12 Evo Tires Last edited by Q8y_drifter; 09-09-2010 at 02:16 PM.

09-14-2010, 09:41 AM	#3 (permalink)
SoCal 370Z A True Z Fanatic Join Date: Feb 2009 Location: US of A Posts: 2,842 Drives: Answers Rep Power: 33	Q8y_drifter, Curious as to whether you can post the diagram with the radiator, and if you know the radiator fluid capacity specs? In Japan they have aftermarket radiators for our 370Z that are much larger and they tout them for better cooling. So I am wondering whether you have a larger factory radiator too? Thanks, and a great post on your part! rep point sent; rep point to OP too. __________________ ( Click to show/hide ) Why I NEVER say NO to the Panda Lou Fusz!!!

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09-15-2010, 05:29 AM	#6 (permalink)
Vegitto-kun A True Z Fanatic Join Date: Feb 2010 Location: USA Posts: 2,011 Drives: 09 370Z Rep Power: 262	My dif case is finned too.