Oil Cooler Leak - Nissan Forums : Nissan Forum
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#1 Old 03-19-2013, 11:56 AM
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Oil Cooler Leak

I have a 2007 Altima S with a 2.5 4 cylinder. The oil cooler is leaking between the two halves of the cooler and not where it bolts to the engine. Can the cooler be taken apart and resealed or have a new gasket installed? Does anyone have any instructions on how to do this. I really do not want to spend $330.00 for a new cooler if I don't have to. Thank you in advance.

Robert
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#2 Old 03-19-2013, 04:20 PM
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There is a gasket. Should be #3 in the photo.



Judging by the below instructions, it could take some time to replace.

Quote:
1. Drain engine oil. Refer to LU-10, "Changing Engine Oil".
2. Drain engine coolant. Refer to CO-12, "Changing Engine Coolant".

CAUTION:
Do not spill coolant on the drive belt.

3. Remove front RH wheel and tire. Refer to WT-65, "Adjustment".
4. Remove RH fender protector side cover. Refer to EXT-20, "Removal and Installation" (Coupe models) or
EXT-42, "Removal and Installation" (Sedan models).
5. Remove front exhaust tube. Refer to EX-5, "Exploded View".
6. Disconnect the oil pressure switch connector and remove the oil pressure switch.

CAUTION:
Do not drop or shock the oil pressure switch.

7. Disconnect water hoses from oil cooler.
8. Remove oil cooler bolts and oil cooler.
9. Remove oil cooler gasket.

~Mark

SOLD: 2010 Altima 3.5SR Coupe Fully Loaded- Eibach Springs/Racingline Y-Pipe/Takeda Intake

Nissan Factory Service Manuals (FSM):
http://www.nicoclub.com/FSM/

Last edited by VQP0WER; 03-19-2013 at 08:41 PM.
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#3 Old 03-19-2013, 04:54 PM
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step 7 was optional, right?




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#4 Old 03-19-2013, 05:28 PM
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How bad is your leak? Can you post a picture??
I COULD also have it, still not sure. See link below.

Long story short mechanics took a look at it and actually my power steering hoses were leaking pretty bad and they are right on top of cooler.
At the time I had hoses replaced together with power steering fluid tank and cooler was cleaned out real nice to make sure it was in fact power steering fluid dripping down on it and not cooler leaking. 3 weeks later I stopped by the shop to lift the car up and inspect it for new leaks and there was a LITTTTLE bit of moisture/fluid in the same spot.

I'm still not sure if it's my cooler or leftovers from power steering fluid.....


http://www.nissanclub.com/forums/200...part-leak.html

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#5 Old 03-19-2013, 08:40 PM
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Quote:
Originally Posted by WyattJS View Post
step 7 was optional, right?
Fixed.

~Mark

SOLD: 2010 Altima 3.5SR Coupe Fully Loaded- Eibach Springs/Racingline Y-Pipe/Takeda Intake

Nissan Factory Service Manuals (FSM):
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#6 Old 03-20-2013, 10:14 AM
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My leak is not coming from where the cooler bolts to the side of the engine but from the top of the cooler itself where it is square and 4 bolts holding the two halves together. Is there a gasket for this? Can the cooler be taken apart and resealed?

thanks,
Robert
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#7 Old 03-20-2013, 11:41 AM
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One thing in order to make shure your oil cooler isn t leaking is to have it tested at a radiator shop , also check for leaks with the hose where they connect to the cooler itself .

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#8 Old 03-20-2013, 06:11 PM
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Quote:
Originally Posted by rbrad6937 View Post
My leak is not coming from where the cooler bolts to the side of the engine but from the top of the cooler itself where it is square and 4 bolts holding the two halves together. Is there a gasket for this? Can the cooler be taken apart and resealed?

thanks,
Robert
This part looks to be just the oil transfer to and from oil cooler. I'm sure you can fab a gasket once you have this in you hands. But considering the steps you have to do to have this part removed from the engine, It may be better to have the replacement part before you start. You can return the replacement part if you are able to fab a gasket.
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2011 Silver S Bone-Stock.
Non-mod modded stuff....
OEM battery replaced at 2 years, with costco battery,
Tinted windows 'just a tad lighter than LIMO dark. 5k LED bulbs all around. 43K HID.
Pending.
Need Ambiance lighting for back cabin. Factory style spoiler. Blackout tape some stuff around.
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#9 Old 03-21-2013, 09:37 AM
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Thank you 4point5GEN for your answer. The assembly is pretty easy to get to so removing it from the vehicle should be easy. Do you know if this leak is a common issue? I've tried to locate a gasket part number for this area but none can be found. I can only find the gasket that bolts the assembly to the enging block.

Thanks again,
Robert
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#10 Old 03-21-2013, 12:03 PM
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Perhaps this has a chemical gasket on it. It looks like a fairly tight tolerance flange. Perfect application for an RTV like Ultra Grey. Just don't put too much on there and let it fully cure before firing it back up.

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#11 Old 03-21-2013, 03:38 PM
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AT VQPOWER ...

VQ, where do you get the FSM images you post here from time to time? Thanks for that by the way, having the FSM diagrams are incredibly helpful.

I have downloaded copies of FSMs from niccoclub but those .pdf's don't allow me to cut and paste images.

Thanks!

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#12 Old 03-21-2013, 03:53 PM
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Quote:
Originally Posted by DLS View Post
pdf's don't allow me to cut and paste images.
Use "prt sc" print screen funtion on your keyboard (near f12 and pause buttons near top right. And paste it into paint. Viola!

Back on topic.....
Since you can't find the part number for the gasket, they won't have it for you to order. I would stop by your friendly neighborhood auto parts store and ask for a tube of ultra grey, gasket roll that can be used on oily surfaces and such. Take it apart and see if you can get it done.

It may not work. So it is better to have the thing to be replaced as your car will be out of commission until you have a working part.

Even before doing all this, can you steam clean that area and see the new oil leak and make sure that infact it is what you think it is?

Just saying it may be from the hose [4,C] that attached to it, or the little drain looking bolt/plug[2] or even the gasket [3] on the engine block. Like my gramps use to say "measure 10 times before cutting!"

2011 Silver S Bone-Stock.
Non-mod modded stuff....
OEM battery replaced at 2 years, with costco battery,
Tinted windows 'just a tad lighter than LIMO dark. 5k LED bulbs all around. 43K HID.
Pending.
Need Ambiance lighting for back cabin. Factory style spoiler. Blackout tape some stuff around.

Last edited by 4point5Gen; 03-21-2013 at 04:04 PM.
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#13 Old 03-21-2013, 04:15 PM
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Great point. I am going through 1 quart of oil every two weeks. Cleaning the area will be where I first start. It's really a mess on the back side of the block from the leak. thank for the advice.

Robert
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#14 Old 03-21-2013, 04:48 PM
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the print screen function is old school. If you have Win 7, just go to the run box and type 'snipping tool.' Way better than messin with Paint.

~Mark

SOLD: 2010 Altima 3.5SR Coupe Fully Loaded- Eibach Springs/Racingline Y-Pipe/Takeda Intake

Nissan Factory Service Manuals (FSM):
http://www.nicoclub.com/FSM/
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#15 Old 03-21-2013, 11:49 PM
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Thanks VQP0WER,

Everything I have is XP ... until tomorrow when I pick up several new machines for home and office! I'll check out the snipping tool.

Pasting into paint and then editing all the extra stuff is a major pain ... I'm looking forward to testing the new toy!

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  Nissan Forums : Nissan Forum > Nissanclub.com Nissan - Infiniti Enthusiast Forums > NISSAN ALTIMA FORUMS > 2007-2012 Nissan Altima Forums > 2007-2012 Nissan Altima Discussion (2.5 & 3.5)

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