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Nissan 370Z Forum (http://www.the370z.com/)
-   Engine & Drivetrain (http://www.the370z.com/engine-drivetrain/)
-   -   Everyone with oil temp issues (http://www.the370z.com/engine-drivetrain/3044-everyone-oil-temp-issues.html)

dad 04-15-2009 02:49 PM
Quote:
Originally Posted by wstar (Post 57403)
Seems counter-intuitive, but if it works...

The A/C condenser is definitely going to dump more heat in the area of your radiator. The only thing I can image that's at work here, is perhaps when the car is "overheated" only 1 of the two fans is running up front, and the other one only turns on when the A/C is turned on.
That's a good possibility!

semtex 04-15-2009 02:51 PM
Quote:
Originally Posted by wstar (Post 57398)
There's already a couple of oil threads and lots of heated (but friendly) debate on the subject. I'm going Motul 300V on my next change, and at least one other person had talked about it too (semtex?):

Oil Change

Nissan Ester Oil
Yep. I've got 3 cans of Motul at the ready when it's time for my next oil change. I'm also the guy who suggested Water Wetter earlier in this thread. Glad it's apparently helping. I added Water Wetter in the day after I bought my car and haven't seen my oil temp go past 240. Mind you, I haven't tracked it either, but I have driven it quite hard for extended periods.

AARC51 04-15-2009 04:11 PM
My car doesn't seem to get over 220 even with spirited driving. It's about 75 degrees out here, guess I got lucky.

ChrisSlicks 04-15-2009 04:14 PM
Quote:
Originally Posted by Jesse (Post 57438)
I dont think the water wetter would do anything....its the oil thats hot, not the water. if water wetter was soo good, the ingredients would already be in coolant. Water is what cools your motor, the coolant just keeps the water stable (freezing/cooling) and lubricates your water pump. Anything else and your risking mixing something that may break down what your cooling system needs. And there are other variables no one thinks about (except me) like electrolysis (might be misspelled). How is this chemical effect your head gasket? how does it affect the conductivity of the coolant which eats head gaskets? what about lubrication? does it build up in your motor in the hot spots that you cant see?? Trust me.... I have seen plenty of crazy things. the best thing to do is to change it approx every 30,000. Gasoline, oil, coolant, brake fluid, all automotive chemicals have a shelf life just like milk.
Water is the best liquid thermal conductor - period. The other stuff is just to prevent the water from eating your engine parts and prevent it freezing like you said.

Our cars come with a 50/50 mix so they aren't as efficient as they could be. Improving the thermal conductivity of the coolant by altering the ratio should have a definite improvement on the ability for the coolant to absorb heat from the oil, hence lowering oil temperatures. It's not enough for the track but it might be enough for the SoCal people to survive summer.

semtex 04-15-2009 04:41 PM
Quote:
Originally Posted by Jesse (Post 57438)
I dont think the water wetter would do anything....its the oil thats hot, not the water. if water wetter was soo good, the ingredients would already be in coolant. Water is what cools your motor, the coolant just keeps the water stable (freezing/cooling) and lubricates your water pump. Anything else and your risking mixing something that may break down what your cooling system needs. And there are other variables no one thinks about (except me) like electrolysis (might be misspelled). How is this chemical effect your head gasket? how does it affect the conductivity of the coolant which eats head gaskets? what about lubrication? does it build up in your motor in the hot spots that you cant see?? Trust me.... I have seen plenty of crazy things. the best thing to do is to change it approx every 30,000. Gasoline, oil, coolant, brake fluid, all automotive chemicals have a shelf life just like milk.
My understanding is that our oil is water-cooled on this car. Hence, if you improve your water-cooling ability, you by extension improve the oil cooling. As for your list of concerns, have you done any research into this particular product to substantiate them? Because if you have, please do tell. Water Wetter is made by Red Line. Here's a link to their Water Wetter page. There's a product data sheet link at the bottom too. It lists all these chemicals that I'm sure will make more sense to you than me. ;)

Red Line Oil: Coolants and Others

SoCal 370Z 04-15-2009 04:43 PM
Water Wetter is a super favorite among the sportbike crowd.

ChrisSlicks 04-15-2009 04:45 PM
Quote:
Originally Posted by semtex (Post 57484)
My understanding is that our oil is water-cooled on this car. Hence, if you improve your water-cooling ability, you by extension improve the oil cooling. As for your list of concerns, have you done any research into this particular product to substantiate them? Because if you have, please do tell. Water Wetter is made by Red Line. Here's a link to their Water Wetter page. There's a product data sheet link at the bottom too. It lists all these chemicals that I'm sure will make more sense to you than me. ;)

Red Line Oil: Coolants and Others
The water wetter works, but it should ideally be added during a flush when you add pure distilled water with the appropriate amount of wetter.

wstar 04-15-2009 04:58 PM
Quote:
Originally Posted by ChrisSlicks (Post 57487)
The water wetter works, but it should ideally be added during a flush when you add pure distilled water with the appropriate amount of wetter.
Yeah I'm worried about going straight water+wetter on a street car though, especially this one, just for corrosion and boiling point reasons. For now I just sucked out 12 fl oz of the existing mix and replaced it with the wetter. I'd like to drain and refill later before we get into the worst of the summer, but I'm thinking I'll still keep some coolant in there. Maybe 70/30 distilled/coolant + another bottle of wetter.

JoeyD 04-15-2009 05:30 PM
I don't want to rain on the parade, but I do want to offer a warning. Nissan has an ever increasing rate of warranty denials. I don't think it is outside the realm of possibility that Nissan would deny a warranty claim, for drivetrain components, if the coolant mixture had been altered. I'm not saying it will happen, or is happening, just that it might happen.

wstar 04-15-2009 06:33 PM
Quote:
Originally Posted by Jesse (Post 57514)
Very true. they can use just about any excuse and can take fluid samples. If they feel like being a-holes. but with a 30k car why risk it.

And no, sorry, I didnt read about how great a product is from the peolpe who made it. sorry. but I have 'heard' good things about it. I just dont see the point.....if the wetter cools the cooling system, the thermostat would just close a little and warm it up agian.... thats just my thought tho, and why are we fixing something thats not broken? the oil temp is not hot because we dont have 'water wetter' in the system. like I said, just my opinion. I stand corrected though, I did not know oil on the z is cooled by the coolant....... waiting a year before I buy mine.......let YOU guys find the limits of the car! hehehehe!
Re: the thermostat, our stock thermostat begins to open at 170F, reaching full flow at 195F, and doesn't close completely until it gets back down to 160F. I monitored my coolant temp via OBD-II when I was doing my Intake Air Temp testing on the Stillen Gen 3 stuff (since the dummy gauge is no help), and once the car got up to a stable temperature, the coolant never got back under 194 (and was usually in the low 200's). I don't think water wetter's going to change much with our themostats.

This PDF from Redline Water Wetter Tech Info gives their full technical spiel on why this stuff works. It makes a lot of sense, and a lot of people swear by it.

caneman88 04-15-2009 06:44 PM
Quote:
Originally Posted by rbratton (Post 50465)
I just called and spoke with Nissan about this issue. Although they were very polite, the call was not helpful. The woman on the other end could only tell me that there were no recalls and that I should talk to my dealer technician about extracting "maximum performance potential" from my vehicle. She also offered that we should not experience any of the overheating issues without violating the law. I guess I'll get the Stillen unit so I can enjoy a track day.
Nissan put knee pads in the car they expect it to be driven HARD!

kster 04-15-2009 07:41 PM
I e-mailed Nissan this week about the oil overheating issue and they replied with the same response that others have received:

"Thank you for contacting Nissan North America, Inc. and your interest in our 2009 370z. Thank you very much for your concern, this matter is currently under review at this time."

ChrisSlicks 04-15-2009 08:30 PM
Quote:
Originally Posted by Jesse (Post 57514)
Very true. they can use just about any excuse and can take fluid samples. If they feel like being a-holes. but with a 30k car why risk it.

And no, sorry, I didnt read about how great a product is from the peolpe who made it. sorry. but I have 'heard' good things about it. I just dont see the point.....if the wetter cools the cooling system, the thermostat would just close a little and warm it up agian.... thats just my thought tho, and why are we fixing something thats not broken? the oil temp is not hot because we dont have 'water wetter' in the system. like I said, just my opinion. I stand corrected though, I did not know oil on the z is cooled by the coolant....... waiting a year before I buy mine.......let YOU guys find the limits of the car! hehehehe!
Jessie, the water wetter has nothing to do with helping to keep the water cooler, its purpose is to improve the heat transfer from the metal. This will actually make the water hotter quicker, but the water is easily cooled by the large radiator. Also on this engines the oil is indirectly cooled by the passing water (the oil and water passages are deliberately close to each other) so the better the water can transfer the heat the cooler the oil will stay.

jimClark53 04-16-2009 03:09 AM
Does the water get hot when the oil gets hot ?
If no, then water wetter is waste of time.

chubbs 04-16-2009 04:20 AM
Quote:
Originally Posted by JoeyD (Post 57509)
I don't want to rain on the parade, but I do want to offer a warning. Nissan has an ever increasing rate of warranty denials. I don't think it is outside the realm of possibility that Nissan would deny a warranty claim, for drivetrain components, if the coolant mixture had been altered. I'm not saying it will happen, or is happening, just that it might happen.
Very good point Joey - I'd worry about that too.


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