Mobil 1 agrees with Dr. Haas

[UncleRunkle]

Originally Posted By: demarpaint
Not sure what requirements it exceeds, Chrylser flat out told me in an email that if I used 0W-20 in my 08 Jeep that called for 5W-20 and there was an oil related failure the warranty would be void! I saw something similar on Mobil's website and emailed Chrysler to find out. I would love to switch to 0W-20 at least for the winter months.

Frank D


Does this jeep have the hemi with the displacement on demand?, if so the oil viscosity plays a major role in how that mechanism works and 5w20 is the ONLY oil that can be used...period.

 

[wileyE]

If the engine failed and the warranty dept did a used oil analysis, they'd never be able to see a difference between a 0w20 and a 5w20.

In defense of the manufactures, they can't just put "use whatever oil makes you warm and fuzzy" in the operator manual? in defense of any reps, you can't tell people to do something that's not in the manual even if YOU know it would be OK. used to be able to, but not in this day and age.

 

[Pablo]

Originally Posted By: UncleRunkle


Does this jeep have the hemi with the displacement on demand?, if so the oil viscosity plays a major role in how that mechanism works and 5w20 is the ONLY oil that can be used...period.


Not doubting your knowledge of this engine - but the only real difference in viscosity between 0W-20 and 5W-20 will be in some pretty brisk weather....above that well the difference between brands and certainly temperatures could vary more than any given brand of 0W-20 and 5W-20. Please explain.

 

[demarpaint]

Originally Posted By: UncleRunkle
Originally Posted By: demarpaint
Not sure what requirements it exceeds, Chrylser flat out told me in an email that if I used 0W-20 in my 08 Jeep that called for 5W-20 and there was an oil related failure the warranty would be void! I saw something similar on Mobil's website and emailed Chrysler to find out. I would love to switch to 0W-20 at least for the winter months.

Frank D


Does this jeep have the hemi with the displacement on demand?, if so the oil viscosity plays a major role in how that mechanism works and 5w20 is the ONLY oil that can be used...period.



Its your basic 3.7L. I am not an expert on oil (that's why I post here), but from what I've read the 0W-xx are better oils in just about every application for a newer car. That was my beef with Chrysler saying 5W-20 ONLY. If there is no way in a chemical analysis of oils to tell the difference between a 0W-20, and a 5W-20 as someone mentioned in this thread, then at my next OC I will use 0W-20, which will be for the winter months anyway.

Frank D

 

[ARB1977]

Moble One comming back with their 0W30 and now Syntec...i guess we can thank Dr.Haas.

 

[Steve S]

Originally Posted By: ARB1977
Moble One comming back with their 0W30 and now Syntec...i guess we can thank Dr.Haas.
Why?

 

[XS650]

Originally Posted By: Steve S
Originally Posted By: ARB1977
Moble One comming back with their 0W30 and now Syntec...i guess we can thank Dr.Haas.
Why?


He showed them how to determine proper oil viscosity by using the OEM oil pressure gauge in a car

 

[Gary Allan]

Originally Posted By: XS650
Originally Posted By: Steve S
Originally Posted By: ARB1977
Moble One comming back with their 0W30 and now Syntec...i guess we can thank Dr.Haas.
Why?


He showed them how to determine proper oil viscosity by using the OEM oil pressure gauge in a car

Yes, if you check his membership onset date, it coincided with DC going to the "simulated" oil pressure gauge. It's obvious that this allowed them to use whatever oil they wanted without fear.

 

[Steve S]

Originally Posted By: XS650
Originally Posted By: Steve S
Originally Posted By: ARB1977
Moble One comming back with their 0W30 and now Syntec...i guess we can thank Dr.Haas.
Why?


He showed them how to determine proper oil viscosity by using the OEM oil pressure gauge in a car

He is not really far off in theory.

 

[XS650]

Originally Posted By: Steve S
Originally Posted By: XS650
Originally Posted By: Steve S
Originally Posted By: ARB1977
Moble One comming back with their 0W30 and now Syntec...i guess we can thank Dr.Haas.
Why?


He showed them how to determine proper oil viscosity by using the OEM oil pressure gauge in a car

He is not really far off in theory.


It's more of a 1/2 arsed rule of thumb than a real theory.

 

[artificialist]

GM has a weird way of telling people about 0w30 oil.
Many GM manual state "using 0w30 or 5w30 full synthetic during winter is recommended."

However, it doesn't say anything about using 0w30 during summer.

 

[Robert1955]

Originally Posted By: demarpaint
if I used 0W-20 in my 08 Jeep that called for 5W-20 and there was an oil related failure the warranty would be void!

Well, if it was oil related then the statement is very true. But as every 0W-20 oil I know of is at the very least the equal of its 5W brothers I doubt you should worry about it and go 0W.

 

[demarpaint]

I have a fresh fill of Pennzoil Platinum 5W-20 in it now. Next OC is in December and more than likely I will try the 0W-20 for the winter months. By that time Chrysler might come to their senses and understand that 0W-20 can be used in place of 5W-20 and back spec it.

Frank D

 

[Max_Wander]

I'd love to see a company that has an established channel of communication between product engineer and consumer. This kind of nonsense is what happens when all information filters through the pleats of marketing bozos and the council they have.

 

[ekpolk]

So, exactly what is the presumed mechanism through which the 0w-20 would provide inferior protection relative to 5w-20? All things being equal (yeah, yeah, I know...), the 0w should be superior to the 5w oil. Because of the goofiness of the SAE specs, it's theoretically possible that the 0w oil is actually thicker at normal starting temps than the 5w would be. At any rate, ASSUMING, that the 0w oil flows better when cold, but is roughly the same thickness at op temps, exactly how would the 0w-20 oil cause damage that the 5w-20 oil would not? I think the answer is, "it wouldn't," and Chrysler is FoS...

 

[Gary Allan]

I think it's the same thing that Toyota pulled in the often quoted TSB. It merely establishes a line where the factory decided to consider 0w-20 oils. By "consider" ...I mean (imagine busy person) "Oh ...yeah ..them too".

 

[Drivebelt]

Quote:
But as every 0W-20 oil I know of is at the very least the equal of its 5W brothers I doubt you should worry about it and go 0W.


Bingo.

A 0W-20 meets both the high and low temperature viscosity requirements of a 5W-20.

A 0w30 meets both the high and low temperature viscosity requirements of a 5w30 or a 10w30.

In the case of a 5W, one needs to be under 6600 cP @ -30C, …a 0W meets that and in fact it exceeds it because it will be well under 6600 (a 0W must under 6200 cP @ -35C).

 

[XS650]

Originally Posted By: ekpolk
So, exactly what is the presumed mechanism through which the 0w-20 would provide inferior protection relative to 5w-20? ....exactly how would the 0w-20 oil cause damage that the 5w-20 oil would not? I think the answer is, "it wouldn't," and Chrysler is FoS...


Have we established that Chrysler is FoS, or is it just some mouth breather at a dealership that's FoS?

Some of the aversion to high spread multi vis oils come from the olden daze when 10w30 and 10W-40 sheared like crazy. That memory isn't likely to go away any faster than the 3000 mile oil change mantra is.

 

[Mike_dup1]

I says right in my GM Owners manual that I can use 0w30 synthetic oil.

 

[demarpaint]

I got my info from emailing Chrysler thru their website, not thru the dealer service dept. When I called the dealer service dept they said use the oil that's marked on the fill cap. When I told them that the 0W-20 is the better all around choice because at operating temps it is exactly they same as a 5W-20, and when cold its better they replied what is on the cap is what is to be used. Use of another oil will void a warranty.

It's obvious they don't have a clue, and as mentioned come the winter I will make the change to 0W-20.

Frank D