Nissan 370Z Forum
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Nissan 370Z Forum (http://www.the370z.com/)
-   Nissan 370Z General Discussions (http://www.the370z.com/nissan-370z-general-discussions/)
-   -   Oil temps: 335 comparitive observation. (http://www.the370z.com/nissan-370z-general-discussions/4635-oil-temps-335-comparitive-observation.html)

Jordo! 05-20-2014 05:04 AM
Quote:
Originally Posted by juld0zer (Post 2825707)
bit of a thread revival here..

the 335i is a (in early models twin) turbo car so oil temps would definitely be higher than an N/A engine because the engine oil is used to lubricate the turbo bearings so it's just another creator of oil heat.

The issue is, the Nissan ECU is extremely overprotective. As many folks have pointed out on this forum, modern cars will most likely run oil temps of 100*c/210f+ in just normal daily driving.

Our engine's throttle response suffers significantly at oil temps of 94*c/200f upwards - which in my opinion is ridiculously low for a sports car.

I'm still not convinced that the VVEL system contributes that much heat that it has to be protected. Probably more like the VVEL linkages and small components would likely become weaker at higher engine temps...

The CVTC system is often overlooked when it comes to oil heat. It relies on oil pressure to hydraulically adjust the cam angle and this generates a fair amount of heat.

The other issue worth mentioning is the onboard oil temp gauge - surely it doesnt update in real time. I notice the throttle lag lingers for a while even afger the gauge reports <94*c oil temp. Has anyone hooked up a separate oil temp gauge with its own temp probe and compared? I cant remember what Cipher was reporting but it did seem to have a highish update frequency based on my log.
I believe the ECU pulls a little ignition timing over 200* F -- not sure how fast the analog gauge responds, but the ECU is probably updating fairly close to real time.

Elan 05-20-2014 07:41 AM
Literally read this thread as oil temp at 335 degrees. Was about to say you have a major problem.

2011 Nismo#91 05-20-2014 08:56 AM
Quote:
Originally Posted by Elan (Post 2826052)
Literally read this thread as oil temp at 335 degrees. Was about to say you have a major problem.
Me too.

Anyways, corvettes have the same issue with the oil temp getting very hot if you push them. This is nothing new, all your standard production cars will overheat their oil if you push them hard for some time. Its just you won't know you're doing it because 99% of all these cars don't have an oil temp gauge. If we didn't have an oil temp gauge and limp mode no one would even bring these topics up.

The oil weight that is recommended at operating temp (100c or 212f) for this car is a 30 grade.
If you are seeing high temps constantly switch to a 40 grade.
You can see in the chart that a 30 grade oil at 212f has the same viscosity as a 40 grade oil at 240f. Those these only come in 10w40 commonly so you will lose some efficiency for cold starts because the oil will be thicker then a 5W.

kenchan 05-20-2014 09:17 AM
yah, i suppose that is a good idea to use different viscosity for certain conditions if the 5w30's not cutting it.

JARblue 05-20-2014 09:22 AM
Quote:
Originally Posted by 2011 Nismo#91 (Post 2826191)
The oil weight that is recommended at operating temp (100c or 212f) for this car is a 30 grade.
If you are seeing high temps constantly switch to a 40 grade.
You can see in the chart that a 30 grade oil at 212f has the same viscosity as a 40 grade oil at 240f. Those these only come in 10w40 commonly so you will lose some efficiency for cold starts because the oil will be thicker then a 5W.
Mobil 1 makes a 0W-40. It's their European blend. And it only costs $25 for 5 qts at Walmart. I know a number of forum members are running it. I was considering it because the Z runs quite warm. I may try it for my next oil change to run through the summer. We'll see.

Mitco39 05-20-2014 09:26 AM
I took a drive in the mountians this weekend. With the oil temp probe in my oil pan on the freeway at a constant 70mph the oil temps would sit at 210F. On some windy roads at about 50mph the temps would climp up to about 225F. Keep in mind this is not while driving it hard, this is while following campers and other motorists through winding roads. Nonetheless it seems quite high to me. I didnt notice any change in throttle response or in the way the car performed however.

JARblue 05-20-2014 09:29 AM
I've cruised hot Texas highways for several hours and seen my oil temps creep up around 240F at 80 mph in past summers. IATs are through the roof when stopped and timing is definitely being pulled.

kenchan 05-20-2014 09:56 AM
yah, my temps are 210-220 range in the summer. nowhere near the 240 when i start worrying.

and my ride is a 09 with no oil cooler. i have no need or any plans for extra oil cooling.

2011 Nismo#91 05-20-2014 10:52 AM
Quote:
Originally Posted by kenchan (Post 2826233)
yah, i suppose that is a good idea to use different viscosity for certain conditions if the 5w30's not cutting it.
It doesn't feel right with you making normal replies to posts.

:ughdance:

kenchan 05-20-2014 11:17 AM
Quote:
Originally Posted by 2011 Nismo#91 (Post 2826379)
It doesn't feel right with you making normal replies to posts.

:ughdance:

:confused: if it's a valid post, i reply with a valid reply.

only when dumbarses post useless shitt or dumb quesitons here, do i post for enterTrollment. :mad: :icon17:

b15 05-20-2014 03:15 PM
I've only had mine up to 240 once, and I was on it hard in 90+ degree weather. Usually sits around 210-215. This weekend I went on a spirited run and it hit 220 a couple times and settled back down to 215 once I left off. I've been eyeing a 19 row cooler which should suit my driving style perfectly. Hoping to get it this summer, we'll see if I get around to it.

Jordo! 05-20-2014 03:41 PM
Believe it or not -- simply adding metal fins to the oil pan has kept my oil temps about 10 -15* cooler, confirmed on two different 370's.

Search for ARC cool fins -- they use a heat conductive adhesive as well, and while simple and kinda "ghetto" seeming, it does help pull heat away.

I have 2-3 all over the underside of the oil pan and another couple on the dif. On the dyno, oil temps drop down faster between pulls with them as well.

In normal somewhat spirited driving in FL i typically see temps around 200* - 205* F tops, and logged around 207* F on Cipher. In prolonged drives in the heat -- 220* tops. I've never seen it go past that after the fins were added, whereas before it might creep as high as 235* -- still not hot enough to really worry, but the fins are very cheap and do actually work as claimed.

DLSTR 05-20-2014 03:42 PM
Quote:
Originally Posted by b15 (Post 2826783)
I've only had mine up to 240 once, and I was on it hard in 90+ degree weather. Usually sits around 210-215. This weekend I went on a spirited run and it hit 220 a couple times and settled back down to 215 once I left off. I've been eyeing a 19 row cooler which should suit my driving style perfectly. Hoping to get it this summer, we'll see if I get around to it.
Sounds like u don't really need one. You are in no way punishing the motor or the oil. If u track then I'd look I to it.

DLSTR 05-20-2014 03:44 PM
Quote:
Originally Posted by Jordo! (Post 2826820)
Believe it or not -- simply adding metal fins to the oil pan has kept my oil temps about 10 -15* cooler, confirmed on two different 370's.

Search for ARC cool fins -- they use a heat conductive adhesive as well, and while simple and kinda "ghetto" seeming, it does help pull heat away.

I have 2-3 all over the underside of the oil pan and another couple on the dif. On the dyno, oil temps drop down faster between pulls with them as well.

In normal somewhat spirited driving in FL i typically see temps around 200* - 205* F tops, and logged around 207* F on Cipher. In prolonged drives in the heat -- 220* tops. I've never seen it go past that after the fins were added, whereas before it might creep ad high as 235* -- still not hot enough to really worry, but the fins are very cheap and do actually work as claimed.

Good data and post!

kenchan 05-20-2014 03:45 PM
Quote:
Originally Posted by kenchan (Post 2826822)
uh oh... yet another homedepot mod? :ugh2:
wheew... not quite :tup:


http://ecx.images-amazon.com/images/I/61Zg7%2BEa3vL.jpg


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