Oil temperature

IDZRVIT

The oils of today are not the oils of just a few years ago where there was concern hitting temps of 260F or greater. The materials used to build engines have also advanced which require advanced oil formulations because of the higher heat generated by the engines - higher HP = higher engine temps and especially for performance cars. So, todays advanced oil formulas must meet certain specs in order to get API SM or SN certification. One criteria is to protect the engine with oil temps up to 300F. Don't believe me? Go look it up. So the Z goes into limp mode at 280F. Makes sense to go into limp mode below 300F vice higher than 300F. 260F is no longer an issue but some choose to hold onto old ideas about oil temps. Nissan now adds an oil cooler of sorts but no matter what you own, if your gonna track a vehicle, you need an oil cooler - oem or after market.

__________________
"America.... still builds rockets!"
Vette: 355 cid, 400 rwhp
'13 CTS-V Coupe: 6.2L LSA, 556HP

lachap55

Mr. IDZRVIT,
This is all we are asking of NISSAN. To assure us that our engines are not damage from high oil temperatures.(what we might think are high temperatures) The statements you made about how oils and engines have advanced to the point should be placed in NISSAN'S genetic response to the hundreds or thousands of people worried about their investments. Could you please direct us, simply layman's to this information concerning modern oil breakdowns and at what temperatures. I have read many article concerning oil temperature breakdown and not come across the number you speak of. Thanks in advance to your response.

IDZRVIT

Go here Motor oil - Wikipedia, the free encyclopedia and scroll down to the section on ILSAC. The entire article should be read.

__________________
"America.... still builds rockets!"
Vette: 355 cid, 400 rwhp
'13 CTS-V Coupe: 6.2L LSA, 556HP

Red__Zed

Oil breaks down significantly faster when operated above 230ish.

So while, yes, you are correct in saying that 260* temps are not a major concern by themselves, they do open up the door to additional complications.


There are some good G37 threads on BITOG for those interested...

IDZRVIT

Motor oil - Wikipedia, the free encyclopedia

Did you take the time to read the above? If you did, try to comprehend what they are saying. If the oil is tested at 300F for 100 hours and the bearings (the most critical component in your engine) show minimum wear, then I interpret that as oil that is not breaking down at 230, 240, 260 or 300F and is protecting your engine. If you disagree with this then please explain what is breaking down the oil? Complications? The test standard for certification is again, running an engine (doesn't matter what engine is used) at 300F for 100 hours virtually non-stop!!!

G37 owners talking about oil means the same as Z owners talking about oil. Most know jack sh1t about how oils function yet they offer all kinds of 'expert' advice. And they still can't acknowledge that oils have improved greatly just in the past few years overcoming the 260F barriers of the past. You appear to be one of those that just can't accept or resist change. Please don't take offense because there are lots out there who think the same as you. Do some reasearch, and not BITOG, on what the test standards are that the oil is required to meet or exceed in order to be certified as an SM/SN and ILSAC. The link I provided is just a starting point for those who want to educate themselves on the test standards.

__________________
"America.... still builds rockets!"
Vette: 355 cid, 400 rwhp
'13 CTS-V Coupe: 6.2L LSA, 556HP

SouthArk370Z

+1. Comparing current lubricants to those of just 20 years ago is like comparing our VQ37VHRs to a late-'60s Ford 289 V8. They do the same thing - gas in, HP out - but the VQ is soooooo much different (HP/displacement, reliability/longevity, octane requirements, &c). Same with modern lubes - they are just a LOT better than they used to be (but then, much more is demanded of them).