Hello!
This is my first post, though I read a lot of information here for the last month and surprised how tricky can be oil choosing
I have Infiniti G35x '07 sedan, with the VQ35HR engine (the same as Nissan 350Z '07-'08). I bought the car used with the 25000 miles on odometer and since then been using Motul 8100 Eco-Energy 5w30 oil (now it's 64000 miles). The car seems to like this oil, almost no consumption and engine seems to run smooth (though I didn't try any other oils to compare).
Anyway, since I bought the car I experienced "sputtering" problem (when the car warms up it sputters a little). There's a huge thread here about this issue on my350z.com: http://my350z.com/forum/maintenance-and-repair/307878-sputtering-during-warm-up.html. The only cure found is to change VTC covers (1500$+ work) - too expensive. But luckily, one guy there found that using the oil with a lighter density helps, here's a post about it (http://my350z.com/forum/9095291-post623.html):
"Few update from my side, and oil test results:
- Motul 300V 5W40, oil density:0,893 = Important sputtering
- Motul 300V 5W30, oil density: 0,871 = Light/Medium sputtering
- Mobil 1 New Life 0W40: oil density: 0,850 = Extremly light sputtering, almost none
- Castrol Edge Sport 0W40: oil density: 0,838 = No sputtering at all
I will also test the Motul 8100 X-Max 0W40, design for the 350Z, 370Z and GTR by Motul, with an oil density: 0,842.
Then, I guess the issue come from the density of the oil, which not allow a good work of the solenoid of the VTC, as explain by this garage with the Consult III results: Google translated from Japanese
So, it seems that the issue come from the oil, but not from the SAE range, the oil density is the issue.
So, I decided to change my oil and I narrowed my choice between Motul Eco-Clean 5w30 C2 and Motul X-Max 0w40. The other issue I don't want to have is earlier "limp" mode (which occurs at 280-300 F oil temperature) when I track my car at hot weather sometimes. I can't say this Eco-Energy oil goes to the "limp" mode too early, but I feel I need something more prone to overheat. And i choose only between these oils (or maybe some other Motul's). Here's oils specifics:
Motul 8100 Eco-Energy 5w30:
Viscosity grade SAE J 300 5W-30
Density at 20°C (68°F) ASTM D1298 0.848
Viscosity at 40°C (104°F) ASTM D445 57 mm²/s
Viscosity at 100°C (212°F) ASTM D445 10 mm²/s
HTHS viscosity at 150°C (302°F) ASTM D4741 3.4 mPa.s
Viscosity index ASTM D2270 163
Pour point ASTM D97 -36°C / -33°F
Flash point ASTM D92 226°C / 439°F
Sulfated ash ASTM D874 0.98% weight
TBN ASTM D2896 10.3 mg KOH/g
Motul 8100 Eco-Clean 5w30 C2 (this is recommended oil for my car by Motul site):
Viscosity grade SAE J 300 5W-30
Density at 20°C (68°F) ASTM D1298 0.845
Viscosity at 40°C (104°F) ASTM D445 57.9 mm²/s
Viscosity at 100°C (212°F) ASTM D445 10.4 mm²/s
HTHS viscosity at 150°C (302°F) ASTM D4741 3.0 mPa.s
Viscosity index ASTM D2270 171
Pour point ASTM D97 -42°C / -43.6°
Flash point ASTM D92 232°C / 449.6°
Sulfated ash ASTM D874 0.80% weight
TBN ASTM D2896 8.0 mg KOH/g
Motul 8100 X-Max 0w40 (this oil is recommended in the Motul technical annotation to it, as they say it is good for GT-R, 370z, 350z):
Viscosity grade SAE J 300 0W-40
Density at 20°C (68°F) ASTM D1298 0.842
Viscosity at 40°C (104°F) ASTM D445 74.9 mm²/s
Viscosity at 100°C (212°F) ASTM D445 13.3 mm²/s
HTHS viscosity at 150°C (302°F) ASTM D4741 3.6 mPa.s
Viscosity index ASTM D2270 182
Pour point ASTM D97 -45°C / -49°F
Flash point ASTM D92 222°C / 431.6°F
Sulfated ash ASTM D874 0.80% weight
TBN ASTM D2896 7.0 mg KOH/g
So, which oil will help me with my morning "sputtering" issue (0,842 density from X-Max seems to be the best?) and won't take me to the "limp" mode earlier (I guees, it is connected with the HTHS?)?
Sorry for the long post and bad english, but only you guys can help me
This is my first post, though I read a lot of information here for the last month and surprised how tricky can be oil choosing
I have Infiniti G35x '07 sedan, with the VQ35HR engine (the same as Nissan 350Z '07-'08). I bought the car used with the 25000 miles on odometer and since then been using Motul 8100 Eco-Energy 5w30 oil (now it's 64000 miles). The car seems to like this oil, almost no consumption and engine seems to run smooth (though I didn't try any other oils to compare).
Anyway, since I bought the car I experienced "sputtering" problem (when the car warms up it sputters a little). There's a huge thread here about this issue on my350z.com: http://my350z.com/forum/maintenance-and-repair/307878-sputtering-during-warm-up.html. The only cure found is to change VTC covers (1500$+ work) - too expensive. But luckily, one guy there found that using the oil with a lighter density helps, here's a post about it (http://my350z.com/forum/9095291-post623.html):
"Few update from my side, and oil test results:
- Motul 300V 5W40, oil density:0,893 = Important sputtering
- Motul 300V 5W30, oil density: 0,871 = Light/Medium sputtering
- Mobil 1 New Life 0W40: oil density: 0,850 = Extremly light sputtering, almost none
- Castrol Edge Sport 0W40: oil density: 0,838 = No sputtering at all
I will also test the Motul 8100 X-Max 0W40, design for the 350Z, 370Z and GTR by Motul, with an oil density: 0,842.
Then, I guess the issue come from the density of the oil, which not allow a good work of the solenoid of the VTC, as explain by this garage with the Consult III results: Google translated from Japanese
So, it seems that the issue come from the oil, but not from the SAE range, the oil density is the issue.
So, I decided to change my oil and I narrowed my choice between Motul Eco-Clean 5w30 C2 and Motul X-Max 0w40. The other issue I don't want to have is earlier "limp" mode (which occurs at 280-300 F oil temperature) when I track my car at hot weather sometimes. I can't say this Eco-Energy oil goes to the "limp" mode too early, but I feel I need something more prone to overheat. And i choose only between these oils (or maybe some other Motul's). Here's oils specifics:
Motul 8100 Eco-Energy 5w30:
Viscosity grade SAE J 300 5W-30
Density at 20°C (68°F) ASTM D1298 0.848
Viscosity at 40°C (104°F) ASTM D445 57 mm²/s
Viscosity at 100°C (212°F) ASTM D445 10 mm²/s
HTHS viscosity at 150°C (302°F) ASTM D4741 3.4 mPa.s
Viscosity index ASTM D2270 163
Pour point ASTM D97 -36°C / -33°F
Flash point ASTM D92 226°C / 439°F
Sulfated ash ASTM D874 0.98% weight
TBN ASTM D2896 10.3 mg KOH/g
Motul 8100 Eco-Clean 5w30 C2 (this is recommended oil for my car by Motul site):
Viscosity grade SAE J 300 5W-30
Density at 20°C (68°F) ASTM D1298 0.845
Viscosity at 40°C (104°F) ASTM D445 57.9 mm²/s
Viscosity at 100°C (212°F) ASTM D445 10.4 mm²/s
HTHS viscosity at 150°C (302°F) ASTM D4741 3.0 mPa.s
Viscosity index ASTM D2270 171
Pour point ASTM D97 -42°C / -43.6°
Flash point ASTM D92 232°C / 449.6°
Sulfated ash ASTM D874 0.80% weight
TBN ASTM D2896 8.0 mg KOH/g
Motul 8100 X-Max 0w40 (this oil is recommended in the Motul technical annotation to it, as they say it is good for GT-R, 370z, 350z):
Viscosity grade SAE J 300 0W-40
Density at 20°C (68°F) ASTM D1298 0.842
Viscosity at 40°C (104°F) ASTM D445 74.9 mm²/s
Viscosity at 100°C (212°F) ASTM D445 13.3 mm²/s
HTHS viscosity at 150°C (302°F) ASTM D4741 3.6 mPa.s
Viscosity index ASTM D2270 182
Pour point ASTM D97 -45°C / -49°F
Flash point ASTM D92 222°C / 431.6°F
Sulfated ash ASTM D874 0.80% weight
TBN ASTM D2896 7.0 mg KOH/g
So, which oil will help me with my morning "sputtering" issue (0,842 density from X-Max seems to be the best?) and won't take me to the "limp" mode earlier (I guees, it is connected with the HTHS?)?
Sorry for the long post and bad english, but only you guys can help me