Hey Perry ,, nice to see you over here.....

 

I'd still bone her though

 

Sounds like your service advisor is clueless (is she blonde?). Seriously, using any good synthetic oil should not create any problems. They may not like using "customer parts" due to "liability" issues. Sounds like she omitted the oil (on purpose). Kudos to you for checking the oil when you got home. I may check mine before leaving the dealers lot.

For those that mentioned Mobil 1 0w 40 here is the information and they do still produce this oil. It is used on my E 350 by the dealer at every oil change (about 10k).

I have used it in a turbo Audi A6 to prolong the life of the turbos because of the oil's ability to lube the parts immediately at start up.

My next oil change at Infiniti will include 5 quarts for them to use.

 

Which depends on location.

Probably for most one can select a single type and be good year round. Personally if I were in a very cold climate during the winter I would probably rely more on a heater than trying to change the grade, but then that would also depend on the individual, does the car sit outside, etc.

I think 5-30 is the most recommended for Infiniti and from what I see that is good for temperatures as low as -30 F.

 

+100000!!

ive been using mobil 1 0w-40 with the M1 M108 filter since 6000 miles and currently have 27000 miles with no OC or other related issues.

 

Any reason you are using 0-40 over 0-30 or even 5-30?

You may benefit by a reduction of a couple of degrees in operating temperature.

 

Mobil 1's 0W 40 is reported to be of better quality than the other weights. Because it's oem fill for some European / turbo engines, it's rumored to still be a group IV synthetic base stock vs a dino based group III

 

But is it actually better for the Infiniti? The 0W over a 5W is not really the issue (but 5W should be good for down to - 30 degrees F) but the 40W may mean that it flows less easily than a 30W and therefore may provide less lubrication than lets say Mobile 1's 0-30W and could allow less heat removal due to the lower flow as well.

 

40 is a viscosity rating. higher = thicker more viscous. But some 40 weights actually measure out to be closwer to a 30 weight in some cases.

As long as the weights are fairly similar, lubrication and wear protection is going to be a factor of film thickness and additive package. Both of which the 0w 40 is better (in this particular case)

 

According to Mobile's website and the standard for viscosity grades the following is true:

40 viscosity at 100 C Min = 12.5 cSt Max = 16.3 Mobile 0-40 = 14 cSt
30 viscosity at 100 C Min = 09.3 cSt Max = 12.5 Mobile 0-30 = 11 cSt

This would mean that Mobile 0-40 is actually about midrange for a 40 weight oil and the same could be said for Mobile 0-30 being about the midrange for a 30 weight oil. At 40 C there is about a 25% difference of 78 cSt for the 0-40 and 63.1 for the 0-30.

Besides a higher viscosity oil not flowing as fast through oil passages it can especially with babbit type bearings form an oil wedge at higher rpms.

In the case of the 0 rating for motor oils the weight is basically the same as a 5 with a lower temperature pour point. The difference is about 10 degrees for many brands with the 5 weight good to about -30 degrees or so.

So the recommended weight by Infiniti would still indicate that one should be using the 5/30 (or 0/30 since it has the same characteristics) in U.S. marketed cars.

 

I run AMSoil and just do the oil change and filter change myself, no need for the dealers to work on these cars...

 

If I were you I would switch to Castrol Syntec 0w30 European formula oil rather than M1 0W30.

Moible1 0w30 is ACEA A1 rated oil and Castrol Syntec 0w30 is ACEA A3.

The full ACEA specs are:
A1 Fuel Economy Petrol †
A2 Standard performance level
A3 High performance and / or extended drain
A5 Fuel economy petrol with extended drain capability †

† Not suitable for all engines - should ONLY be used in engines specifying this fuel efficient grade. Refer to the manufacturer handbook of contact your local dealer if you're not sure.

 

Little bit more info on the these two particular oils and their ratings. (Mobile1 0w-30 and Castrol Syntec 0w-30 European formula.)


Quality Counts! It doesn't matter what sort of fancy marketing goes into an engine oil, how many naked babes smear it all over their bodies, how bright and colourful the packaging is, it's what's written on the packaging which counts. Specifications and approvals are everything. There are two established testing bodies. The API (American Petroleum Institute), and the European counterpart, the ACEA (Association des Constructeurs Europeens d'Automobiles - which was the CCMC). You've probably never heard of either of them, but their stamp of approval will be seen on the side of every reputable can of engine oil.

The API
The API classifications are different for petrol and diesel engines:
For petrol, listings start with 'S' (meaning Service category, but you can also think of it as Spark-plug ignition), followed by another code to denote standard. 'SM' is the current top grade, which recently replaced 'SL' and 'SH'. 'SH' will be found on most expensive oils, and almost all the new synthetics. It's basically an upgraded 'SG' oil which has been tested more sternly.

You already know from a previous post about ACEA.

oil rating info can be easily found on the can.

M1 0W-30 is rated: API-SM (Highest rating) ACEA-A1
Castrol Syntec 0w-30 European formula rated: API-SL (replaced by SM, also highest rating) ACEA-A3

Difference between A1 and A3 rating is: A3 will be a better 0w-30 as it has a greater number of addatives required and/or the viscosity is on the thicker end of the 30 spectrum in order to qualify it as an A3 oil.

 

Shows how some at dealers are clueless when it comes to oil. I use it on my Miata and it is slightly thick for a 30 weight. I also used it in my 07 Maxima and it did quite well according to the UOA.

 

Noted!!!! ty Joker......