Nissan 370Z Forum - Royal Purple 01600 Purple Ice Super-Coolant Radiator Additive

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Why are you so worried about 240, are you using conventional oil? Fully synthetic oils can handle temps up over 300deg with out braking down. There is very little viscosity change from 212F which is what is considered idea to 240F. I suppose your could switch to 5 or 10W-40 and you'd be covered for viscosity changes to the much higher temps. But I wouldn't worry about it unless your regularly hitting limp mode.

I am assuming your talking about the triple gauge temp with oil temp and not counting the dots and converting it to a temp in your head while driving.

Quote:

Originally Posted by 2011 Nismo#91 (Post 3297809)

Thanks....just what I was going to throw out there. Earlier this month I was seeing oil temps upwards of 110 C. (230 F) at highway speeds in 90+ ambient temps.
I had a pretty good idea I'be be safe with synthetic (just couldn't run anywhere as hot as some of my Harleys did running syn) and since there were no signs of problems with the rad boiling over, nor anything that resembled limp mode, I pressed on. (I figured any problem with oil temps would show itself on the water/radiator side of the equation eventually) At one point I started questioning the water temp. sensor 'cause my car gets to operating temp a lot faster than I thought it should. (the water temp 'dot' display) The whole trip the water dot didn't move after the first few minutes of runtime. Settled in about 7 over from the left.
My Z sure runs hot IMO. If I pop the hood after even a sub 10 minute trip in summer temps it's is real hot under there. Normal?

Maybe I'm worrying about nothing.

104

Quote:

Originally Posted by MILENKOGT (Post 3297613)

Yeah i understand what you're saying about the Thermostat opening and closing temps.

I didn't recommend the Mishimoto, i just noticed that was the only aftermarket option.

Thats why i listed the 300zx Tstat as a possibility.

The mishimoto is way to low, if the 370z is anything like the titan, the engine coolant temp has to be 172.6 deg before you can make any adjustments to timing etc... VIA uprev.

unless this has changed.

Also running that cold has no benefit either.

And I'm not trying to bash, just throwing out what I know to be true, didn't know about the timing adjustment thing, nice to know.

I have to dig up threads about the G35 thermostats being better or worse.

I BELIEVE we ended up realizing the 370Z thermostat was the one 10 degrees cooler, but... We could all be wrong, lol

No problem at all man, its hard to interpret emotion through text lol.

Yeah I wouldn't use the mishimoto though. The nismo T stat for the Vk56 is around the same, i think its 160*deg.

Most people run the modified 300zx TT 170 Tstat with positive results.

I imagine the VK56 and VQ engines share some components out of the same parts bin to an extent.

For example I learned this evening a 300ZX TT clutch setup will bolt up to a 6spd Xterra transmission with a custom flywheel mated to a VK56 lol.

http://www.the370z.com/parts-sale-pr...tion-only.html

Cheap 34row. You can use it w/o a turbo setup.