Another Vegas Run and Oil Temps scared me

370Zsteve · 07-26-2010, 01:53 PM

Quote:

Originally Posted by Lug

Nissan put a throttle limiter in at 280 because they think you may get excessive bearing wear at 300. If Nissan thinks your car is fine at 260, I don't know that anyone here has the technical know how and access to Nissan data to really be able to refute that. Remember, the 280 limit is just a precaution, not an engine failure.

Since thermal breakdown occurs over 240F, I'd wager that 260F is not a positive thing. Modshack posted a graph showing oil viscosity breakdown a few months back.

WarmAndSCSI · 07-26-2010, 04:52 PM

Quote:

Originally Posted by Lug

Nissan put a throttle limiter in at 280 because they think you may get excessive bearing wear at 300. If Nissan thinks your car is fine at 260, I don't know that anyone here has the technical know how and access to Nissan data to really be able to refute that. Remember, the 280 limit is just a precaution, not an engine failure.

That's fine and dandy, but even Nissan cannot predict what will happen if you're pushing oil temp that high on X, Y, or Z oil. Different oils have vastly different protection levels at a given temperature.

I have to say, 260-280 is very high for a Group II-based oil (conventional). Those kinds of sustained oil temperatures are the reason we have synthetic oil available anyway.

After looking at UOA reports on Nissan Ester Oil on normal change intervals, it would be kind of scary to push 260-280 degrees on an oil with relatively low viscosity at temperature.

That said, 260 degrees is nothing for an excellent Group IV or V-based true synthetic oil. Using a good oil will net you some peace of mind, at the least.

Chuckster · 07-26-2010, 12:25 PM

I live in New Mexico and I've seen my oil temperature get up to 250 on a hot day.

flashburn · 07-26-2010, 12:46 PM

I remember some people saying that the performance starts getting reduced (presumably by the ECU) starting at a certain temperature (before limp-mode), maybe something like 250 Degrees? Does anyone have any more info on this or if it is even true? They seemed to claim the performance reduction was gradual until finally hitting limp mode at 280.

TamZ · 07-26-2010, 01:10 PM

I'm at Hurricane harbor today so can't answer each post but appreciate all the responses! As for gear it was in Auto mode so not really sure which exact gear. I also didn't notice any performance issues after 250.. but I kept it at 65 so maybe that would make it harder to notice.

Thank for all the replies. .I thought I might get razzed because maybe I was worrying for nothing.

Quote:

Originally Posted by flashburn

I remember some people saying that the performance starts getting reduced (presumably by the ECU) starting at a certain temperature (before limp-mode), maybe something like 250 Degrees? Does anyone have any more info on this or if it is even true? They seemed to claim the performance reduction was gradual until finally hitting limp mode at 280.

flashburn · 07-26-2010, 01:15 PM

Quote:

Originally Posted by TamZ

Thank for all the replies. .I thought I might get razzed because maybe I was worrying for nothing.

Well to be fair, we are only being nice since you are a chick. If you were a guy we would be tearing you to shreds.

TamZ · 07-26-2010, 01:18 PM

Quote:

Originally Posted by flashburn

Well to be fair, we are only being nice since you are a chick. If you were a guy we would be tearing you to shreds.

Fair enough..lol. I appreciate it nonetheless!

Mike · 07-26-2010, 01:49 PM

like was posted, it goes into limp mode at 280, so you are fine up to that point. Its not ideal, but it won't do any harm. When I had my superchared corvette, both my local performance shop and the head mechanic at Spring Mountain race school in Las Vegas said 285 was as hot as I wanted to see the oil in the LS2, and I think its a function of oil break down and not the particular engine.

before my oil cooler, I saw 260 in stop and go traffic here in atlanta at around 100 outside air temp.

sonic370 · 07-26-2010, 07:35 PM

Quote:

Originally Posted by Mike

like was posted, it goes into limp mode at 280, so you are fine up to that point. Its not ideal, but it won't do any harm. When I had my superchared corvette, both my local performance shop and the head mechanic at Spring Mountain race school in Las Vegas said 285 was as hot as I wanted to see the oil in the LS2, and I think its a function of oil break down and not the particular engine.

before my oil cooler, I saw 260 in stop and go traffic here in atlanta at around 100 outside air temp.

sorry to sound stupid but what happens in limp mode. keep in clean!!!

TamZ · 07-26-2010, 07:49 PM

Quote:

Originally Posted by sonic370

sorry to sound stupid but what happens in limp mode. keep in clean!!!

Lol...

nicknick · 07-26-2010, 10:04 PM

In regards to oil on these things, I'd recommend using either Motul or Redline. Both are made from Ester and both resist heat breakdown better than the other common synthetics. If you're going to use the Motul 300V series which is a double ester, it is r3ecommended that oil be changed every 5,000kilometres as this is basically a racing oil and will stay in spec under the most arduous conditions but does need to be changed at 5,000kms'.

WarmAndSCSI · 07-26-2010, 10:53 PM

Quote:

Originally Posted by nicknick

In regards to oil on these things, I'd recommend using either Motul or Redline. Both are made from Ester and both resist heat breakdown better than the other common synthetics. If you're going to use the Motul 300V series which is a double ester, it is r3ecommended that oil be changed every 5,000kilometres as this is basically a racing oil and will stay in spec under the most arduous conditions but does need to be changed at 5,000kms'.

No need for either... I pay extra for Red Line for engines I invest $15k+ into, but not a stock engine that's still under a factory warranty. There really is no advantage or extra insurance, I'd put a wager on that.

Mobil 1, Castrol Syntec, Pennzoil Platinum, take your pick. If you're ultra-picky, there are Group IV oils available on the shelves of any auto store.

wishihadnav · 07-26-2010, 03:51 PM

^^i believe turning on the AC will kick on the condensor/aux fan and maybe cool a little more..

flashburn · 07-26-2010, 04:09 PM

Quote:

Originally Posted by wishihadnav

^^i believe turning on the AC will kick on the condensor/aux fan and maybe cool a little more..

Yep, there was a thread (or five) about this a while ago.

wishihadnav · 07-26-2010, 03:51 PM

bieber fever!..haha

07-26-2010, 12:25 PM	#3 (permalink)
Chuckster Base Member Join Date: Jul 2009 Location: Albuquerque, NM Posts: 18 Drives: PG/Pers/Sp/Tr/Nv/6MT Rep Power: 17	I live in New Mexico and I've seen my oil temperature get up to 250 on a hot day. __________________ I have kleptomania, but when it gets bad, I take something for it.

07-26-2010, 12:46 PM	#4 (permalink)
flashburn A True Z Fanatic Join Date: May 2009 Location: Central Florida Posts: 1,884 Drives: '12 Corvette GS 6M Rep Power: 20	I remember some people saying that the performance starts getting reduced (presumably by the ECU) starting at a certain temperature (before limp-mode), maybe something like 250 Degrees? Does anyone have any more info on this or if it is even true? They seemed to claim the performance reduction was gradual until finally hitting limp mode at 280. __________________ Current Ride: 2012 Chevrolet Corvette Grand Sport Centennial Edition Carbon Flash 6M Previous Ride: 2009 Nissan 370Z Sport Platinum Graphite 7AT

07-26-2010, 01:49 PM	#8 (permalink)
Mike The370Z.com Sponsor Join Date: Jun 2009 Location: Loganville, GA Posts: 5,944 Drives: 370z Rep Power: 2187	like was posted, it goes into limp mode at 280, so you are fine up to that point. Its not ideal, but it won't do any harm. When I had my superchared corvette, both my local performance shop and the head mechanic at Spring Mountain race school in Las Vegas said 285 was as hot as I wanted to see the oil in the LS2, and I think its a function of oil break down and not the particular engine. before my oil cooler, I saw 260 in stop and go traffic here in atlanta at around 100 outside air temp. __________________ NISSAN: 75 280Z / 86 300ZX GLL /87 Sentra SE / 03 350Z / 23 Z Porsche: 93 968 / 23 Macan GTS / 93 968

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07-26-2010, 10:04 PM	#11 (permalink)
nicknick Enthusiast Member Join Date: Jan 2009 Location: Australia Posts: 438 Drives: Mazda mx5 2007 6sp m Rep Power: 17	In regards to oil on these things, I'd recommend using either Motul or Redline. Both are made from Ester and both resist heat breakdown better than the other common synthetics. If you're going to use the Motul 300V series which is a double ester, it is r3ecommended that oil be changed every 5,000kilometres as this is basically a racing oil and will stay in spec under the most arduous conditions but does need to be changed at 5,000kms'.

07-26-2010, 03:51 PM	#13 (permalink)
wishihadnav A True Z Fanatic Join Date: Nov 2009 Location: 90090 Posts: 1,851 Drives: Force Fed Nismo Rep Power: 184	^^i believe turning on the AC will kick on the condensor/aux fan and maybe cool a little more..

07-26-2010, 03:51 PM	#15 (permalink)
wishihadnav A True Z Fanatic Join Date: Nov 2009 Location: 90090 Posts: 1,851 Drives: Force Fed Nismo Rep Power: 184	bieber fever!..haha