Dealer tells me German Castrol Synthetic 0W30 oil is too thin!??

[Triton3.5]

Originally Posted by pfarmer

Why 10-60?

Unless your engine is excessively worn a 60 grade oil may well provide you with less lubrication, less cooling, and less mpg.

I don't see any need to go above 30, the lower value picked should be based on location.

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

[donpisto]

Originally Posted by 1SlowSedan

Biggest IDIOT I've met, Marcy doesn't know jack sh!t about cars. SCREW CERRITOS INFINITI

I'd still bone her though

[chairman25]

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.

[pfarmer]

Originally Posted by DJ Hellfire

And season!

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.

[Cabad85]

Originally Posted by chairman25

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.

+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.

[pfarmer]

Originally Posted by chairman25

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.

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.

[Jeff92se]

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

[pfarmer]

Originally Posted by Jeff92se

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.

[Jeff92se]

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)

[pfarmer]

Originally Posted by Jeff92se

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.

[LPG35x]

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