![]() |
![]() |
![]() |
|
|||||||
| Register | Photo Gallery | FAQ | Members List | Calendar | Search | Today's Posts | Mark Forums Read | Used Cars | Garage | Vendor Directory |
| Welcome to myG37 forums! |
|
|
Welcome to myG37 Forums. You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to start new topics, reply to conversations, privately message other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join myG37 Forums today! |
![]() |
|
|
Thread Tools | Display Modes |
|
|
#151 |
|
Registered User
|
So I can use what I use in my 3.5 which is Castol Syntec 5w-30 when I get my G37 sedan?
|
|
|
|
|
|
#152 |
|
Registered User
2008 Infiniti G37 |
Just use the type of oil that the owner's manual says to, and you'll be fine.
__________________
'08 PG G37S, Premium, FI Cat-back, Fujita SRI, Stillen Spoiler, 8000K D2S |
|
|
|
|
|
#153 |
|
Registered User
|
Brad, Glad you think the Castrol is working for you. I'm anxious to see some different
UOAs from the 3.7 since that's the only way to be sure an oil is working as well as you "think" Sorry that my last post angered you enough for you to say it was "jacked up", whatever sophmoric meaning that has. You missed the points that I was trying to make and that so many other "G" owners want to know....why does Nissan recommend ester oil for the 3.7, and is it needed or will it benefit the 3.5 motor. I hope this answers some of the questions that many of us share; and Brad, I hope this clarifies some of your "issues", whatever they are. Both the 3.5 and 3.7 are called "VVel motors", but the 3.7 has approximately 40% different parts (according to Nissan). The 3.7, VQ37VHR motor is what Nissan calls a "throttleless" design. "Throttleless" is the word Mr Junichi Yajima, the designer of both systems uses to describe the newer VVel system in the 3.7. This motor does not have a "butterfly" in the intake tract, but instead uses sensors, an actuator, and an "actuator motor" mechanism to regulate air flow into the engine"directly at the intake valves." Again, this is not my description, This is a description directly from Mr Yajima who designed it. The new VVel system in the VQ37HR motor is more sensitive to oil pressure than the previous 3.5 VVel system due to design, metals used, and tighter tolerances than the 3.5 system. The 3.7 is noisey (see the TSBs, multiple posts, published tests, and reviews for more information). We all know that noise in an engine translates to metal-to-metal contact and/or poor lubrication....this is where ester oil comes into the picture. Ester oil provides better lubrication to some metals and in tighter spaces than non-ester oil. It also "sticks" better to moving parts in many applications as compared to non-ester oils. Ester was the perfect solution to quiet the valve train in Nissan's new engine. This is ONE reason Nissan developed their Nissan Ester Oil, very simply to reduce the noise and provide the best possible lubrication to the new VVel parts....and it works. The SECOND reason Nissan developed thier own oils is that they had low Fleet MPG numbers as compared to other manufacturers, so they developed the oil with nano particles of carbon suspended in it, which work very well with the coating they use on pistons, cylinders and valves to reduce friction. It worked well enough to raise their fleet MPG, so it's what they use for their factory fill on their new cars. It's just that simple. Nissan requires API certified, "SM" rated 5w-30 in both the 3.5 and 3.7 engines for warranty purposes. Nissan recommends ester oil for the VQ37VHR on page 9-3 of every "G" owners manual. It's not cotroversial, complex or a marketing gimmick. It's a choice, use what you want. If you want optimal lubrication for the valve train of your 3.7 VVel, at least you know why Nissan recommends it. It's your choice. Last edited by JonfromCB; 10-06-2009 at 04:33 PM. |
|
|
|
|
|
#154 |
|
Registered User
|
BradManUWF: I agree with your response above. Throttle Body and VVEL Valve Control are two totally separate parts of the engine. One is the air/fuel intake control and the other is for valve timing control.
This topic has been going on for too long with too many assumptions and opinions. Bottom line you should use whichever oil you feel is the best for your car as long as it meets the requirements listed in the owners manual. Nissan Ester is not a requirement but is claimed to be specially formulated for the VVEL metal surfaces but obviously even Infiniti dealers do not generally push it. My dealer did not think it was necessary and only recommended dino 5W-30 especially with the shorter change intervals.
__________________
John - 2009 G37x Sedan Blue Slate/Stone with Premium/Nav - Ventureshield |
|
|
|
|
|
#155 |
|
Registered User
|
I've talked to two different Infiniti dealerships, one refused to sell me anything but ester oil and the other said it was a waste of my money. One oil change I used the ester and the second I used castrol syn blend(this is what the second dealership recommended). Honestly don't see a difference between the two. Recently I've had two instances where I hit the gas and it did not go, but don't think this is from the oil.
I've been doing a lot of researching on this and researching on different motor oil brands. I'm not going to use ester again, really don't see the need to spend the extra cash for it. I am debating between other oil brands, mainly Penzoil Platnium and Mobile 1. Below are the spec sheets for both. Not sure I understand the typical properties. Anyone enlighten me? http://www.pennzoil.com/documents/Pl...otor%20Oil.pdf Mobil 1 5W-30 I did get the below response from mobile when I asked about mobile 1 in our cars versus ester oil: Mobil does not have any information on the Nissan ester motor oil thus recommends that you utilize the Nissan branded motor oil, Mobil1 is not recommended at this time. -- Thank you for choosing ExxonMobil products. If you need further assistance, please contact ExxonMobil at 1-800-ASK-MOBIL -MJ |
|
|
|
|
|
#156 | |||
|
Registered User
2008 Infiniti G37 |
Quote:
You can try to use the longer posts to make you look more credible, but that only works on people who don't think for themselves. Where are you getting your information from? Have you even taken off your intake tubes and looked at the throttle bodies? I know I did when I put my SRIs on, and wow, looky there, 2 throttle bodies. Yes the variable valves will regulate power output by controlling the duration the valves are open, but the throttle bodies regulate the amount of air being allowed into the intake manifold. If the VVEL controls the "throttle" all by itself, we wouldn't still have "throttle bodies" with butterfly valves. Quote:
Quote:
__________________
'08 PG G37S, Premium, FI Cat-back, Fujita SRI, Stillen Spoiler, 8000K D2S |
|||
|
|
|
|
|
#157 |
|
Registered User
2008 Infiniti G37 |
Another thing I noticed. You're not even using Nissan Ester, so why are you all over their bandwagon? I would also think that retired CMSgt of 28.5 years would know what the term "Jacked up" meant.....
"The 3.7 has vvel, and is "throttle less" (no butterfly valve in the intake tract)". You are very incorrect. You do know there's aftermarket throttle bodies and Blitz makes a throttle controller for the G right? That throttle controller adjusts the signal voltage that goes to the actuators that are connected to the butterfly valves that are in the throttle bodies. Take your intake tubes off and have a look at your throttle bodies and get back to us..... Can't stand spreading "Jacked up" info. I'm not saying you're completely wrong, but you're not completely right either. Try to remember, some people will take whatever they read on forums to be truth because they don't know any better. How would you feel if you read something on a forum, took it as truth, and then messed something up on your car later finding out that was the poster's opinion that he/she put out there as fact? If someone read only your posts, they'd think their engine doesn't have throttle bodies and "requires" Nissan Ester, which is not fact, it's opinion. I tell people to use what they feel works for them on anything, but use the owner's manuals as guides. Mods, lock this thread up. It's filled with 11 pages of opinions, including mine, that are partially right and partially wrong. I think people in search of info will get plenty out of 11 pages...... Here, enjoy this article about oil. It's long but very good info - Motor Oil 101 -
__________________
'08 PG G37S, Premium, FI Cat-back, Fujita SRI, Stillen Spoiler, 8000K D2S Last edited by BradManUWF; 10-07-2009 at 04:35 AM. |
|
|
|
|
|
#158 | |
|
Registered User
|
Quote:
|
|
|
|
|
|
|
#159 |
|
Registered User
2008 Infiniti G37 |
Nope, but these oil threads go on forever in every forum and nobody is going to read all the way through to the end unless they're bored out of their mind.
__________________
'08 PG G37S, Premium, FI Cat-back, Fujita SRI, Stillen Spoiler, 8000K D2S |
|
|
|
|
|
#160 |
|
Registered User
|
They do go on forever with no real answers. I'm still not sure which oil to use other then Nissan $$$$.
|
|
|
|
|
|
#161 |
|
Registered User
|
Brad, You've made this personal in regards to insult to others and myself
and my military service . So after I deal with you, I'll provide some information for others on this thread who care and want constructive information rather than your ignorant, non-referenced and incorrect "Brad facts" You say that as a Chief Master Sergeant I should know what "Jacked up" means. Guess what? It's stupid enough that I don't care. FYI I've been there and done things that would make you cry for your mommy and crap yourself, and after over 28 years in the Service, I certainly know a mouthy punk when I encounter one...enough of that! I apologize to the other members who are here for constructive information. Please forgive me In regards to the differences between the 3.5 and the 3.7....You keep saying that I'm wrong, and now "partially right", yet I have provided references to my comparisons and you have not.... So today I called a technician at Infiniti Americal in Tennesee and "ran these posts by them" they confired that I was correct. I have come to the conclusion that you don't know the mechanical differences between the 3.5 and 3.7 VVEL systems and refuse to learn (or can't) and refuse to admit that you are wrong. You could also use some work on your reading retention levels...I am currently using Nissan Esther in my G37 and will be switching to Redline 5w-30 at around 7K....you should read the posts before you accuse me of the hypocracy of promoting the Nissan oil and not using it. Here's some advice from a Chief..get an education Brad, and then you can expect others to veiw you as you would like them too. I mean that with all posiitve sincerety. For the benefit of others: I had an extensive discussion with Infiniti America about the whole "ester oil" issue of owners getting conflicting information from service managers, all the concerns and confusion on multiple nissan/infinity forms and other mechnical and technical oil forms. They did confirm that there is conflicting information coming from inconsistent Service managers. I recommended that they owe it to their customers to explain why they recommend ester oil for the VQ37VHR, And I complained that $12 or more per quart for their conventional oil with ester is unacceptable. They were very receptive and told me that they have recieved similar feedback on each of my concerns, including some information on the 7AT and throttle response. After an over 30 minute conversation with a very knowledeable rep" I was delighted that she told me our call had been very useful information for them and offered me a very unexpected and nice "freebee"...I won't say what it was so that everyone doesn't call them wanting it, but I was very suprised at how receptive they were and that they rewarded me for my efforts...they made my day. Thanks for listening. Last edited by JonfromCB; 10-07-2009 at 01:25 PM. |
|
|
|
|
|
#162 |
|
Registered User
|
Interesting.
|
|
|
|
|
|
#163 | ||
|
Registered User
|
Quote:
Quote:
To Clarify, under normal operation, the two butterfly valves are "open", and VVEL determines the amount of air let into the cylinder via valve lift and duration. (my understanding is that the majority is controlled by lift, rather than duration). Oil pressure is constantly changing, the VVEL system is not sensitive to oil pressure. "normal" oil pressure under operation varies with the measured spot, but is typically between 25psi and 80psi. For further clarification, the only VVEL motors are the VK50 and the VQ37. All other Nissan motors as of this post are not VVEL motors. This includes the GT-R's VR38. For further clarification, most service managers and advisors have minimal technical knowledge of the inner workings of a vehicle. They are too busy with finances and management to keep up with technicalities. Chances are, the first time they are made aware of a TSB is when an informed consumer bring it to them, or if the problem is complained about by a customer. |
||
|
|
|
|
|
#164 | |
|
Registered User
|
Quote:
Mike, I was wondering where you've been. You are absolutely right about the 3.5 not being a "VVEL". Even though it is a variable valve system and is refered to by many, including myself as a "VVEL", it is not. In regards to the "butterfly flap", it's function in the VVEL motor has more to do with the emissions control system than it does "throttle" function. In regards to your statement that "the VVEL system is not sensitive to oil pressure"....I guess that would depend on ones interpretation of the word " sensitive" combined with a detailed knowledge of tribology, the specific oil, and engine in question....BUT, I can tell you that Terry Dyson and "Nissan" both have made statements contrary to yours that the 3.7 VVEL valve train is "sensitive" to oil pressure compared to other Nissan engines. There is no denying that Nissan came out with the "ester" as a "solution" to an "issue" with this engine and that's the subject of this entire thread. I could not agree more with you on your nutshell asessment of Service Managers. The only one out of five I have personally talked to concerning the "ester oil" issue that is knowledgeable and inquisitive about it is the one who actually owns a G37. I am still anxious to see UOAs from 3.7s using various oils. The bigger question is how the engines using non-ester oils will compare to the ones using ester as they start getting close to the end of the warranty mileage??? Last edited by JonfromCB; 10-10-2009 at 12:27 PM. |
|
|
|
|
|
|
#165 | |
|
Registered User
|
Quote:
|
|
|
|
|
![]() |
| Thread Tools | |
| Display Modes | |
|
|
![]() |
![]() |