Pretty sad stuff. It looks like with these numbers, nissan has to eventually do something about it.

Go away you!

Hopefully either Nissan will put one in for those who haven't installed one yet and refund the ones who have. We shall see....

Preliminary Comparison Analysis
 

Attached are some graphs to compare the driving habits and overheating severity with regard to transmission types.

Spearfish !! You're awesome ! +1 coming your way... would like to see some comparison of severity vs ambient temp and severity vs driving style... maybe a scatter chart for each ???

"4" + they install it for you for free.

Nissan should just buy us all Stillen units if they don't already have a sucessful design...but..they had one on the press cars.

Thanks bro. Here's the extra two that you asked for. Tried some scatter charts but they don't work well as the data points are too discrete.

There didn't appear to be many surprises actually. Those who drive on the track or all out on the road had more severe overheating. Sporty driving had a few overheats but the majority were either 'just running hot' or had no issues. (I'm assuming here that 'running hot' is <260F as the survey participant should have selected the next category of >260 otherwise). Conservative drivers again had a larger percentage with no issues.

With regard to ambient temperature, no one listed that they only drive in <70F weather. In the 70-90F range, there is a mix of severity. Above 100F, noone noted normal driving temps (but there are very few in that cohort).

Thanks Travis for putting this together in one place, it will make my life easy for the d-day

This is a great survey, thanks for posting it up, rep points coming your way :tup:

Thanks ! Appreciate the recognition that this was a fair bit of work :) Also, I just posted this on the other thread, but here are the results again...
-------------------------------------------------

So, big thanks to all 73 of you that took our oil overheating survey... here are the results... some observations:

- owners with automatic transmissions are 85% more likely to say "all is good"
- owners that track their car are 2.5x as likely to experience temps over 260F, and 8x as likely to hit limp mode
- yet still, we registered almost 1 in 10 hitting limp mode only on the street, and 1 in 3 only on the street reporting temps above 260F

In case you're wondering what "average disposition to nissan" means... that was the question where we asked: "TO WHAT EXTENT DO YOU AGREE WITH THE FOLLOWING STATEMENT: Nissan has failed to properly engineer this vehicle and it does not meet my expectations due to the oil overheating issue. Nissan should take immediate action to correct the situation."

'5' means "strongly agree"... a '1' means strongly disagree... this is the average score for each group

http://i656.photobucket.com/albums/u...psurveyn73.gif

AND!!!! Nissan still have not even fixed my alignment issue. steering wheel is to the right a bit.

i want a free oil cooler from nissan directly.

How to repair it....
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E-Mail I sent to Nissan North America
 

I sent this e-mail today. We will see what happens

To whom it may concern,

I own a 2010 NISMO 370z, and have noticed the oil temperature constantly running 200+ in this car, and climbing to 220 regularly. I generally warm the car up in my driveway for at least 10 minutes before driving it in order to take it easy on a new engine. I don't race the car and drive it at safe speeds, mostly on the interstate. I generally drive about 90 miles a day. The car is about to hit 2000 miles on the odometer.

I am a member of several 370z forums and "oil overheating" is a constant thread amongst all the forums I participate in. My main worry is that in the summer months, when the ambient temperature starts to get into the 90s and I end up stuck in traffic my car may overheat completely.

Is Nissan planning to address the issue of oil overheats in the 370Z automobiles? Judging by what I've been reading on several forums, this issue was identified in the 2009 370z models as well.

If I don't see some sort of resolution on this, I will likely trade in my car for the Mazda Speed6 or a Mistubishi Lancer-- both cars I like. In fact, had I known this is an unresolved issue that's been going on for a long while I wouldn't have bought the car in the first place. Nobody at the dealer even mentioned it when I bought my 370z. I wonder why?

Respectfully,

PJ,

I found this here on the site under general discussion. I don't think Nissan will resolve that issue, since the response is very well attorney addressed lol.

"Originally Posted by Nissan USA
The 370Z has an engine protection system that reduces peak engine speeds when the oil temperature exceeds recommended levels in order to protect against possible engine damage. Aggressive driving of the 370Z on a race track at sustained high engine speeds can cause increases in oil temperature and may activate this engine protection system. To avoid activation of this engine protection system and these reduced peak engine speeds, Nissan recommends an oil cooler be fitted to the 370Z before driving it on a race track. A Nissan Motorsports accessory oil cooler kit is available for customer purchase through authorized Nissan dealerships for race track use. The part number is 21300-SS370.

An oil cooler is not necessary for normal operation of the vehicle on public roads. The addition of an oil cooler would have raised the price of the car and potentially moved it out of the reach of some customers. Value has been a core principle of the Z car since the original 240Z and we choose to uphold this core principle by not adding additional costs that are unnecessary for normal use. For those individuals who choose to drive their vehicle on a race track, the oil cooler is available as an aftersales item.

The oil cooler is a Nissan Motorsports item and as such is sold without warranty, express or implied, unless expressly prohibited by law in which case the warranty provided is the minimum required by law. The installation of the Nissan Motorsports oil cooler does not, by itself, “void” the vehicle warranty. However any damage caused by the installation or use of this part is expressly excluded under the terms of the Nissan New Vehicle Limited warranty."

Because it hasn't been an issue unless you track your car! I've had my Z in stop-and-go traffic, as well as in different traffic conditions on the highway, with ambient temps well over 100 with no issues whatsoever.