There's just too much. Not worth agreeing, correcting or adjusting facts already known for years. Leaving that one alone.

 

That's b/c they finished off your syncros doing that
GL-4 gear oil 'only'

Fresno Infiniti = noted in my 'black book'.

 

OK, what does your tribologist or your UOAs say is the best oil for a VQ35 Rev-up?

I bought my car with 14K miles and ran it to 18K with less than 7mm of oil consumption. I thought I was safe. I changed it with Valvoline Synpower 10W-30 synthetic and it has used over a quart in 2K miles. I've got over a year left before my warranty is up, but wondering what oil works best. I've currently got Pennzoil Platinum 5/10W-30, Mobil 1 0W-30, and German Castrol 0W-30 to choose from.

 

Just tossing out an oil brand and weight is not going to solve your oil consumption that you are experiencing. There are many other factors and only a used oil analysis will tell what is going on with the internals. You will need to spend the $$ for Terry Dyson' consultation that goes with his UOA. His services are pricier than BlackStone but worth it. Check over on Resolute’s (Will) thread on my350 under VQ oil Analysis and Info: http://my350z.com/forum/engine-and-d...-and-info.html

I used about 3 different oil types before we settled in on Pennzoil Platinum 5w-30. Each engine is going to be different and under different circumstances, therefore what works in one will not necessarily work well in another. Too many variables with metallurgy and other factors. You can search under my SN and find my posted UOA’s with commentary by Resolute. Terry Dyson’s commentary and consulting is proprietary and is between him and his customers. Some raw data can be shared but other tuning advice is kept under wrap. It’s what keeps him in the retail business.

My last and best UAO has not been posted up, but the engine was just starting to seat and seal at 18k miles on the engine.

g/l and remember a used oil analysis is your best friend.

 

Thanks ZeeForce, appreciate the advice.

 

n/p MarkG, we are all here to help one another.

 

After going in because my engine sounded like a lawnmower, I was told it was due to oil and they wanted to do an OC test.

Have done 2 tests so far. Apparently first oil test was ridic amount of consumption and added 1.5L after 1100km (690 miles). Second test needed 0.6L after 1000km (625 miles). They want me to do 4 tests. Is this normal?

 

I have no idea where (or if) it is documented this way, but Infiniti dealerships in Canada seem to be consistent in requiring six checks, each one at 1000km intervals and topping up the oil at each check.

This is the procedure requested by my dealer in Atlantic Canada, and I have heard of a dealer in Quebec (or maybe it was Ontario) performing the same procedure. This is not the procedure documented in the widely distributed TSB.

I finished my six tests and the results were clearly in the no-good range, but the dealer has since asked me to do another test (on my own) without revving the engine beyond 4000 rpm. I did this, submitted my results by email a week ago and have not heard back from them since. I think I will go make a phone call right now :-)

 

^ Let me know how it works out. I'm in the no good zone right now (although the chart is in MILES and 500-1000 miles is a big range). I figure if I can't drive over 4000km's without the engine not having enough oil and ending up sounding like a 30 year old lawn mower that is about to die then I deserve a new engine. Will keep posted as I go for 3rd check later this week.

 

Hi... Ever since I bought my 06 G35 6MT I've measured the oil loss on a more or less weekly basis... I always let it sit overnight and measure it on a flat garage floor... I always remove the stick, walk it over to good light on my workbench and hold the stick next to a metric steel ruler... I do this so I can get good, reliable and consistent measurements... (By the way I don't know how anyone could ever measure the oil level on the car when say you just pull into a gas station and want to measure it... I have found it hard to find the level even after letting it sit for hours... There appears to be just a constant run of oil from splash in the dipstick tube or something that makes it terribly hard to measure the level... Thus my reason for letting it sit all night)... Anyway, results are never consistent... I have seen oil consumption levels as low as 6000 miles per quart and as high as 2400 miles per quart... My engine has never yet met the requirements for replacement (like if it was down 7.5 mm at 1500 miles) and of course, these are my measurements, not some official oil consumption test at the dealer (I would bet I make more careful measurements than they would)... But it sure comes close to being a replaceable engine at times, again only according to me and my measurements... I drive about 250 miles per week and I expect it to be down a little less that 1 mm per week (note, I am the guy whose posted here before who has a 2 quart L-H dipstick (23.8 mm = 2 quart)... Last week that is just what i saw, about .6 mm down from the previous week... Then this week, with the same kind of driving, it was down a huge 2.6 mm... If it stayed at 2.6 mm per about 250 miles of weekly driving, the engine would truly qualify for replacement... Is there some reasonable explanation for why oil consumption might vary significantly from week to week with similar driving miles and driving styles??? I would say my accuracy in measurement is clearly less than 1 mm so going from 0.6 mm to 2.6 mm the following week is not a measurement error... Anyone have similar experience or can anyone recommend what I am seeing with week to week variance like this??? thanks... bob...

 

Hi… I've posted something similar to this before so forgive me if you've seen this from me before but I've never really heard a good answer to this and I'm still very curious so let me pose this again...

First, I own an 06 6MT G35 coupe that possesses a dipstick that is TWO QUARTS L-H, confirmed by me in many different ways but with the simplest way being that on more than one oil change I first put in 3 quarts, let it sit for a while, measured and found the oil at the L mark… I then add a 4th quart, wait, measure and it's half way between L and H… Lastly, add a 5th quart and you got it, now it's full.. So 2 quarts L-H… A very few other folks have confirmed that they also have one of these strange dipsticks as well… Most, however, appear to be 1 quart L-H…

So here comes my question… If you look at the chart on page 7 of the ITB08-002C Infiniti Technical Bulletin that addresses oil consumption in certain G cars, let's just pick one column as an example, say the 1001-1500 mile column that says if the oil is down at least 8 mm on the dipstick then the engine is defined as "No Good"… In summary this says that if after 1499 (or fewer) miles the engine oil is down 8 (or more) mm's on the dipstick, then the engine is bad… Now, for the majority of cars that have a dipstick which is 1 quart L-H and with that L-H range being 24 mm (actually 23.8 mm but let's not pick) that would say that if you're down 8/24 of a quart (1/3 of a quart) at 1500 miles (easier math than 1499) which would represent a car getting 4500 miles/quart, that Infiniti will replace it for you…. Really???? An engine getting 4500 miles/quart and Infiniti would call that bad???? Doesn't that seem like pretty good oil consumption to be changing such engines/????? Now for my engine with 2 quarts L-H, it wouldn't be 4500 mile/quart. instead it would be half of that, or 2250 miles/quart and that at least seems to me to be a poor oil consumption… What I am really trying to understand is what logic did Infinity use to build its Good/Bad table… This table seems to make sense if you have a 2 quart L-H engine/dipstick like I do but it appears that such engines are relatively rare… Instead, the vast majority of engines are 1 quart L-H and so Infiniti is willing (??) to replace thousands of engines that can get 4500 miles/quart of oil??? Wow... That seems hard to believe... Thoughts???

 

My 2 cents...

My dipstick is approximately 2 quarts/liters as well, it's an 05 6MT Coupe. I was 12mm down on one particular check, and it took 1 litre of oil to bring it to the full mark. The full dipstick, between L and H marks measures 24mm. I also check mine after being parked overnight in my garage.

I also find that it is very difficult to check the oil level in these cars unless it has been sitting for an extended period. The TSB prefers 20 (or was it 30?) minutes before checking... I find that you can get a reading after 20-30 minutes with the engine off, but it's not very confidence inspiring.

 

All I know is my old oem revup burner when on L mark (24mm down) took 1 US quart (or 0.946353 liters) to bring back to H.

So for me 24mm = 1 US quart = L-H hash marks on stick.

 

Just got word today that a long block has been ordered for me.

I sent my service rep an email with some details of my own testing with the revs kept below 4000 rpm, as well as a mention of the severe spark knock which is persistent. He forwarded that to his technical team at Infiniti (Canada), and apparently my email was a factor in their decision to go ahead and order a long block.

 

^ Spark knock? I have what sounds like an engine pinging sound upon acceleration from low RPM (i.e. 1500 in 2nd gear when rolling a stop sign). Is this related? Guy told me to us premium only and that is exactly what I do. He then tells me to run a few tanks of regular through it and then go back to premium. I'm running regular gas right now and obviously it's pinging like crazy upon acceleration at low RPMs. Been reading on here about it and apparently it's "normal", although it's annoying as hell and if I don't get a new engine I'm selling the car because of the pinging, not the oil consumption.

I'm hoping to just get a new engine then have both problems go away.