Using 5W-40 on Z's with no oil cooler

Zeto · 07-24-2010, 01:14 AM

I received advice from a tuning shop to run 5W-40 oil as opposed to the 5W-30 since I don't have an oil cooler. They said the heavier will absorb the heat better and the heat will break down the 5W-40 viscosity to a lower weight. Is there any truth in this?

gumpy · 07-24-2010, 01:17 AM

Quote:

Originally Posted by Zeto

I received advice from a tuning shop to run 5W-40 oil as opposed to the 5W-30 since I don't have an oil cooler. They said the heavier will absorb the heat better and the heat will break down the 5W-40 viscosity to a lower weight. Is there any truth in this?

yes and no

Yes a w40 oil will be thicker at higher temperatures and protect better...

No 5w30 is fine for normal driving.

Zeto · 07-24-2010, 10:48 AM

Do you think it would be detrimental at all to run 5w-40 during the summer months?

Modshack · 07-24-2010, 10:55 AM

Quote:

Originally Posted by Zeto

Do you think it would be detrimental at all to run 5w-40 during the summer months?

Could be...The VVEL system is pretty complex.....I'd stick with factory recommended viscosities.

Zeto · 07-24-2010, 11:14 AM

Gotcha thanks!

6spd · 07-24-2010, 12:32 PM

Quote:

Originally Posted by Modshack

Could be...The VVEL system is pretty complex.....I'd stick with factory recommended viscosities.

older cars or newer, more simple cars it won't matter what grade you run for most intents and purposes, but with such a complex motor as this one and many others these days, I'd stick to factory specs.

PapoZalsa · 07-24-2010, 03:49 PM

I'll stick with the recommended oil weight and the 3 yr Warranty can worry about the rest.

sonic370 · 07-24-2010, 09:07 PM

stick with 5w30 it should be ok. just watch the temp and check your oil every
fill up. here in texas the temp can go from 220 to 240 for no good reason.
it can be 85 or 100 outside. had my first oil change at 3000 am now at 5000
and have not used a drop of oil. i use mobil one.

brainrain · 05-13-2021, 03:40 PM

Hello,

Since 2010, does anyone use 5w40 oil ? Nissan in the south of France recommend 5w40 oil instead of 5w30 due to the heat.
What about in california, Florida or Texas ? it's very hot there

I do only 5000 km (3100 miles) per year. I only drive on weekends but I often accelerate hard.

Zyonara91 · 05-13-2021, 03:54 PM

Just stick with a thicker 5w30 I would say. Motul EFE, Redline 5w30, M1 ESP 5w30 and PP Euro L 5w30 are available. They have a high HTHS rating (3.5, which is a good thing) and they run on the thicker side of a 30 grade oil.

I used Liquimoly 5w40 once, never had a issue, but I dumped out the next season without any ill effects.

brainrain · 05-13-2021, 04:13 PM

Quote:

Originally Posted by Zyonara91

Just stick with a thicker 5w30 I would say. Motul EFE, Redline 5w30, M1 ESP 5w30 and PP Euro L 5w30 are available. They have a high HTHS rating (3.5, which is a good thing) and they run on the thicker side of a 30 grade oil.

I used Liquimoly 5w40 once, never had a issue, but I dumped out the next season without any ill effects.

thank you

In france, we don't have an extreme winter compared to USA or Canada. But I try 5w30 of mobil 1

Spooler · 05-13-2021, 04:39 PM

I ran 5w40 with no issues before. I now run 5w50. It will work just fine.

Rusty · 05-13-2021, 05:03 PM

Mobile 1 0w-40 Euro blend. Has everything you need.

brainrain · 05-13-2021, 05:29 PM

Quote:

Originally Posted by Rusty

Mobile 1 0w-40 Euro blend. Has everything you need.

I think 0w40 is for country where it's very cold, isn'it ?

Rusty · 05-13-2021, 06:48 PM

Quote:

Originally Posted by brainrain

I think 0w40 is for country where it's very cold, isn'it ?

It works for both. I use it in all of my vehicles.

07-24-2010, 01:14 AM	#1 (permalink)
Zeto Track Member Join Date: Apr 2009 Location: North NJ Age: 40 Posts: 766 Drives: 09 Pearl White 370Z Rep Power: 267	Using 5W-40 on Z's with no oil cooler I received advice from a tuning shop to run 5W-40 oil as opposed to the 5W-30 since I don't have an oil cooler. They said the heavier will absorb the heat better and the heat will break down the 5W-40 viscosity to a lower weight. Is there any truth in this?

07-24-2010, 03:49 PM	#7 (permalink)
PapoZalsa A True Z Fanatic Join Date: Nov 2009 Location: Not in Sunny Florida Posts: 6,358 Drives: 16 Nismo w/Tech Pack Rep Power: 4500	I'll stick with the recommended oil weight and the 3 yr Warranty can worry about the rest. __________________ 2009 370Z MB Base w/Sport Package 6MT Modshack's Custom Air Intakes /3M Clear Bra/ Illuminated Kick Plates / F. I CBE w/12" resonators / EVO-R Front Lip / Rear Hatch Wing / Tein S-Tech Springs /Ilegal Tint in the Rep. of VA/4x20mm Z1 Spacers/ Vinyl Roof/Liquid Carbon Designs

05-13-2021, 03:40 PM	#9 (permalink)
brainrain Base Member Join Date: May 2019 Location: Paris Posts: 77 Drives: Nissan 370z Rep Power: 6	Hello, Since 2010, does anyone use 5w40 oil ? Nissan in the south of France recommend 5w40 oil instead of 5w30 due to the heat. What about in california, Florida or Texas ? it's very hot there I do only 5000 km (3100 miles) per year. I only drive on weekends but I often accelerate hard. Last edited by brainrain; 05-13-2021 at 03:42 PM.

05-13-2021, 03:54 PM	#10 (permalink)
Zyonara91 Enthusiast Member Join Date: Jun 2016 Location: GTA Posts: 368 Drives: 2010-Red-6spd-S/T Rep Power: 15756	Just stick with a thicker 5w30 I would say. Motul EFE, Redline 5w30, M1 ESP 5w30 and PP Euro L 5w30 are available. They have a high HTHS rating (3.5, which is a good thing) and they run on the thicker side of a 30 grade oil. I used Liquimoly 5w40 once, never had a issue, but I dumped out the next season without any ill effects. brainrain likes this. __________________ 2FT3PDLZ

05-13-2021, 04:39 PM	#12 (permalink)
Spooler A True Z Fanatic Join Date: Jun 2014 Location: Ga Posts: 13,791 Drives: 2013 Nismo 370z Rep Power: 2684392	I ran 5w40 with no issues before. I now run 5w50. It will work just fine. FL 4Motion and brainrain like this.

07-24-2010, 10:48 AM	#3 (permalink)
Zeto Track Member Join Date: Apr 2009 Location: North NJ Age: 40 Posts: 766 Drives: 09 Pearl White 370Z Rep Power: 267	Do you think it would be detrimental at all to run 5w-40 during the summer months?

07-24-2010, 11:14 AM	#5 (permalink)
Zeto Track Member Join Date: Apr 2009 Location: North NJ Age: 40 Posts: 766 Drives: 09 Pearl White 370Z Rep Power: 267	Gotcha thanks!

07-24-2010, 09:07 PM	#8 (permalink)
sonic370 A True Z Fanatic Join Date: May 2010 Location: Orange Texas Posts: 1,574 Drives: 09 370Z Sports PGK Rep Power: 18	stick with 5w30 it should be ok. just watch the temp and check your oil every fill up. here in texas the temp can go from 220 to 240 for no good reason. it can be 85 or 100 outside. had my first oil change at 3000 am now at 5000 and have not used a drop of oil. i use mobil one.

05-13-2021, 05:03 PM	#13 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 68 Posts: 35,171 Drives: 2011 Nismo GM 6M Rep Power: 2684437	Mobile 1 0w-40 Euro blend. Has everything you need. FL 4Motion and brainrain like this. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

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