coupe 6 speed, severe oil consumption

[ampsucker]

just to clarify, we are all talking about the 2007 3.5 engine, right?

[Rooster Cogburn]

2k6

[ampsucker]

oops... sorry, just reread first post in this thread.

so, when they say the 07 is redesigned (80% new parts or something like that) does that mean this problem is fixed for the 07 models with manual trans?

sorry to get my panties in a bunch over this. just is a very big deal breaker for me since it is really hard to find the MT on the 07s in my area. i'll pretty much be stuck with whatever i can find and don't want to end up with a blue smoker...

[zozoka1212]

we have to wait to see if it is fixed. we can certainly hope so.

zozoka

[ampsucker]

if anyone runs across an article or post on this issue for the 2007 model, please post the link....

good luck to those with the problem. it's really a bummer. i hope nissan steps up for you.

thanks....

[KGJ7]

I have a 2005, 6 Speed Infiniti G35 Coupe. I have had excessive oil consumption since I first had this car. I had a short block installed and now I am again having the same problem. I only have 20,00 miles on my car.

After being 1 quart of oil low my car starts rattling like a diesel. I was told today, by Infiniti, that I should keep my oil full (DUH). I should do this until Infiniti finalizes a fix for this problem. I think I got a lemon.

[6spdmax]

This has been a very interesting post for me to read. I've searched on some maxima-specific forums. Seems alot of people who buy a vehicle with the VQ35 the 6spd MT plan to DRIVE their cars. This causes oil to be sucked into the intake manifold. Just wondered if anyone who's posted here has had any luck with replacing the PCV valve or installing an oil catch can.

[telcoman]

This has been a very interesting post for me to read. I've searched on some maxima-specific forums. Seems alot of people who buy a vehicle with the VQ35 the 6spd MT plan to DRIVE their cars. This causes oil to be sucked into the intake manifold. Just wondered if anyone who's posted here has had any luck with replacing the PCV valve or installing an oil catch can.

I've done none of the above. I guess some engines take longer for the rings to seat? With 38.2k miles my oil consumption went from 1000mi/qt when new to about 2500 mi per quart now. Anyone who drives should check their oil, tires and other fluids weekly. Anyone who allows an engine to run out of oil & or gasoline should not be driving. Just my opinion!

Telcoman

[6spdmax]

I guess if my rings have not seated by now, they never will. 90K mi., and using 2 qts per 1600 mi. I bought the car with 87K mi, and I love it except for the oil consumption. Unless there's an easy fix, I'll probably just continue checking the oil at every fill up, and switch from Pennzoil Platinum full synthetic, which the previous owner used, and costs $5.78/qt, to Kendall synthetic blend, which is $2.28/qt.

[joe603]

Don't go to Vegas...cause your luck is bad! Thats all it is. A certain # of engines have this problem...a very small %.

[telcoman]

I guess if my rings have not seated by now, they never will. 90K mi., and using 2 qts per 1600 mi. I bought the car with 87K mi, and I love it except for the oil consumption. Unless there's an easy fix, I'll probably just continue checking the oil at every fill up, and switch from Pennzoil Platinum full synthetic, which the previous owner used, and costs $5.78/qt, to Kendall synthetic blend, which is $2.28/qt.

That kind of sucks but you bought the car at 87k so who knows what kind of care the vehicle received when new? If I were you I would not be using such expensive oil. I would experiment with 10w-40 or 15w-50 instead of 5w-30 to see if either of those oils make a difference? I buy whatever oil is on sale usually between $.79 & $.99 cents per quart usually Pennzoil or Quaker State at my local Pep Boys. I change oil & filter every 3k to 3.5k miles so there is no need to spend over $2 to $6 per quart.

I also have a question for you. At what RPM's do you usually shift?

I am an old farht who's been driving stick shift vehicles for over 40 years. I rarely shift over 3k RPM unless there is some A#&@e in my way. I wonder if high RPMs are pushing oil out past your rings?

Telcoman

[6spdmax]

That kind of sucks but you bought the car at 87k so who knows what kind of care the vehicle received when new? If I were you I would not be using such expensive oil. I would experiment with 10w-40 or 15w-50 instead of 5w-30 to see if either of those oils make a difference? I buy whatever oil is on sale usually between $.79 & $.99 cents per quart usually Pennzoil or Quaker State at my local Pep Boys. I change oil & filter every 3k to 3.5k miles so there is no need to spend over $2 to $6 per quart.

I also have a question for you. At what RPM's do you usually shift?

I am an old farht who's been driving stick shift vehicles for over 40 years. I rarely shift over 3k RPM unless there is some A#&@e in my way. I wonder if high RPMs are pushing oil out past your rings?

Telcoman

The car has always had 10w30 in it. I thought about some 20w50, but thought that might be a little too thick with winter coming. I may start running some Lucas oil treatment through it. I need to start checking the sales at Pepboys though, because 99c is pretty cheap. I almost always keep my rpms above 2K, I almost never shift above 5K rpm, and most of the time I shift around 3K rpm. I don't notice any smoke when starting up in the morning and haven't noticed any during hard acceleration. My plan is just to keep keep adding oil as needed, and run seafoam through the oil and gas every other oil change. Hopefully I can get another 87K miles out of this engine.

[ianh]

Telcoman,

Did you get an answer on the dip stick markings being 2 qts to Low mark ?Does anyone know if thats also true for a 2003 pathy ?

[telcoman]

Did you get an answer on the dip stick markings being 2 qts to Low mark ?Does anyone know if thats also true for a 2003 pathy ?[/QUOTE]

I never let the oil level get to the L mark, however at the 1/2 mark between F & L it takes a quart of oil to bring the level up to the full mark.

As an update, I now have 45k miles and get roughly 2 thousand miles per quart. currently currently using 5w-20 Pennzoil but have some Castrol on hand that I will try soon.



Telcoman

[mconeill]

He had a second engine put in and you want him to check the oil at every gas fill up. Hasn't he been thru enough? I have a 2006 350z and I am on my third engine. My wife drives it and doesn't abuse it. We had to check the oil every 100 miles at the dealer that was 40 minutes away. There is absolutely a problem with the 350z 6 speed. You don't buy a brand new car so you can test it every 1000 miles. You do that to an used car with a lot of miles on it. You obviously don't understand what he is talking about. You sound like a guy that likes running his mouth and doesn't have a clue.

[telcoman]

He had a second engine put in and you want him to check the oil at every gas fill up. Hasn't he been thru enough? I have a 2006 350z and I am on my third engine. My wife drives it and doesn't abuse it. We had to check the oil every 100 miles at the dealer that was 40 minutes away. There is absolutely a problem with the 350z 6 speed. You don't buy a brand new car so you can test it every 1000 miles. You do that to an used car with a lot of miles on it. You obviously don't understand what he is talking about. You sound like a guy that likes running his mouth and doesn't have a clue.

mconeill

Welcome to NICO but lets be nice. Q45 does know what he is talking about. There are many strong opinions as well as considerable age differences between the many posts. I happen to be one of the old farhts who has been driving over 40 years. There are some engines that use oil & some do not but I can tell you from my experience you & everyone else should be checking not only their oil but other fluids and tire pressure weekly.

Failure to do preventive vehicle checks and simple maintenance can come back to bite you in the butt with lots of aggrevation as well.

Just my opinion

Telcoman

[G_whizz]

mconeill

Welcome to NICO but lets be nice. Q45 does know what he is talking about. There are many strong opinions as well as considerable age differences between the many posts. I happen to be one of the old farhts who has been driving over 40 years. There are some engines that use oil & some do not but I can tell you from my experience you & everyone else should be checking not only their oil but other fluids and tire pressure weekly.

Failure to do preventive vehicle checks and simple maintenance can come back to bite you in the butt with lots of aggrevation as well.

Just my opinion

Telcoman

That was a kinda weird for a first post. LOL... but welcome to NICO!!

[joe603]

Sometimes Q45 comes off as abrasive...but he is a very intelligent car tech, so listen to what he has to say.

[win2456]

so... what happened with this? I just bought an '06 coupe yesterday and just learning of this issue now. I read some posts on my350z and saw that a lot of the guys have had their engines replaced. Is this being offered to the G35 owners as well? Is this a wide spread problem or just a few faulty engines? Has anyone else been having problems with oil consumption on there 06+ G35?

I'll be monitoring my oil consumption regularly and try to update this thread.

[tollboothwilley]

been discussed a lot.

Very few have significant issues. Yes, infiniti will replace them if neccessary. If you feel like there is a problem go to a dealer and start the oil consumption test.

[Jacko3]

Had an 07 G-35 Coupe 6MT, with oil consumption. My engine was replaced with the revised VQ engine, which was excellent. Engine has a little more torque than the old engine and I started using synthetic oil in it at 3,000 miles, and I flog the heck out of the revised engine, and it is marvellous. Engine now has mods on it, 5/16" spacer, Mrevv2, Stillen exhaust, JWT pop charger with z -tube.

[telcoman]

As an update, I went thru the oil consumption test at Infiniti and I failed.



My G used 12mm of oil in 3k miles. In order for the the engine to be replaced under warranty it needed to use 18mm.

Telcoman

[kurt22]

thats probably your rings or a valve problem