Turbo6TA

Just wondering if anyone is as confused about the various Mobile 1 oil products as I am?

There was a time not too long ago that there was only one Mobil 1 fully synthetic oil ... Just called Mobil 1.

Now you have:

Mobil 1
5W-20
5W-30
10W-30
0W-40
15W-50

Mobil 1 Advanced Fuel Economy
0W-20
0W-30

Mobil 1 Extended Performance
5W-20
5W-30
10W-30

Mobil 1 ESP
5W-30
5W-40

The Corvette calls for 5W-30 oil ... That could include Mobil 1, Mobile 1 Extended Performance or Mobil 1 ESP.

Operate the car in extreme hot weather such as Phoenix or Las Vegas, and 5W-40 might really be a better choice ... That would include Mobile 1 ESP 5W-40

Anyway ... Mobil 1 has become alot more confusing to me.

Please don't turn this thread into something agrueing whether or not Mobil 1 is the best choice, or whether fully synthetic oils are even really nesessary in a non-turbocharged engine ... We are just talking about all the various Mobil 1 oils now available.

Ron,

capevettes

I just keep it simple and buy Mobil 1 5W 30 at Walmart.

Turbo6TA

Oh ya ... I was at Walmart here in Florida the other day ... They sell Mobil 1 for $25.80 for a 5 quart plastic jug of it (I change my own)

Anyone seen better prices on it anywhere?

Thank's

talon90

What has been used in the Corvette through the 2011 model year (different for 2012) is simply Mobil 1 5W-30 fully synthetic. This would be the 5W-30 as identified in your first group. From there, all you need to verify is if the oil meets GM Spec GM4718M and this will be noted on whatever bottle of oil you pick up if it is certified to this specification. If it doesn't meet it, don't use it.

From the owners manual.

What Kind of Engine Oil to Use
Look for three things:
• GM4718M
This vehicle’s engine requires a special oil meeting
GM Standard GM4718M. Oils meeting this
standard may be identified as synthetic. However,
not all synthetic oils will meet this GM standard.
Use only an oil that meets GM Standard GM4718M.
Notice: Using oils that do not have the GM4718M
Standard designation can cause engine damage
not covered by the vehicle warranty.
• SAE 5W-30
SAE 5W-30 is best for the vehicle. These numbers
on an oil container show its viscosity, or thickness.
Do not use other viscosity oils such as SAE 20W-50.
• American Petroleum Institute (API) starburst symbol
Oils meeting these
requirements should have
the starburst symbol on
the container. This symbol
indicates that the oil
has been certified by the
American Petroleum
Institute (API).
This vehicle’s engine was filled at the factory with a
Mobil 1® synthetic oil meeting all requirements for
this vehicle.
Substitute Engine Oil: When adding oil to maintain
engine oil level, oil meeting GM Standard GM4718M
might not be available. You can add substitute oil
designated SAE 5W-30 with the starburst symbol at all
temperatures. Substitute oil not meeting GM Standard
GM4718M should not be used for an oil change.

turbod

Don't pay attention to "extended" and "advanced". It's all the same price. Use the plain 5W30. I use the Wally Mart 5 quart container of Mobile One plus another at home that contains remainder fresh from previous changes.

Turbo6TA

Thank's for the info Talon.

I'm not trying to 2nd guess GM ... but in areas that have a very hot climate, don't you think a 5W-40 might be a better choice over the thinner 5W-30 ?

Considering bearing cushion and all.

talon90

When the car (and the motor) were going through validation testing both in the extreme cold weather and extreme hot weather at the Arizona proving grounds in the summer, the motor was filled with Mobil 1 5W-30. Looking at the temperature table in the owners manual from the section I mentioned above they show 5W-30 for ambient air temperatures from 0 degrees Fahrenheit to 100 degrees Fahrenheit. and it specifically states "do not use SAE10W-40, SAE 20W-50 or any other viscosity grade oil not recommended."

I would suppose for consistent air temps above 100+ and if the oil met the GM specification indicated on the bottle that you could but I would also consider changing it out when the air temps got below 100.

LDB

A multi grade designation such as 5W-30 means that the oil does not change viscosity with temperature as much as old style, single grade oils. The W number is for cold performance just after the engine is started, and was originally chosen to mean winter starting characteristics. The second number is for warmed up conditions. So if a modern multi grade oil is 5W-30, it means that when the engine is cold, the oil behaves as though it’s an old-style, single grade oil of 5 weight, but after the engine is hot, it behaves as though it’s an old-style, single grade oil of 30 weight. Unless you are in truly extreme conditions, such as full-out racing, or pulling a heavy trailer through mountains, or some such thing where your oil gets ultra hot, you should not go to 40 weight. Hot ambient temperature does not count as “extreme”. Your upper oil temp will be more than adequately limited by your coolant temperature, especially when you consider that the modern multi grade oil does not change viscosity with temperature as much as old style oils. Cold weather is a slightly different story. In that case, the “W” performance is indeed influenced by ambient temperature. But even there, you should not go to 0W-30 unless you are in Minnesota/Alaska-type, ultra cold winter temps, meaning that you park outside, without an engine block heater, such that your oil is well below zero temperature when you start the engine. If you use 0W-30 at any reasonably normal temperature (including normal winters down to zero ambient temp), your oil will be too thin at startup.

Turbo6TA

okie dokie ...

Thank's everyone. I will just stick to the standard Mobil 1 in the 5W-30

Glennm27

Paul,
I was using Mobil 1 15w-50 at VIR, back to 5w-30 after we left the track. You can probably imagine why...

I still am thrilled to have finally met you and Becky after all these years. One of the highlights of my VIR trip this year. That was my 3rd trip to the NCM VIR event and I WILL be there next year. I hope you will too.

talon90

, Oh yeah, I can imagine, it was an awesome trip. I too am very glad to have finally met you and I was very pleased to have met Yvonne. I will be there, like someone else said to me, you'd have to chain me to a fence to keep me from going.

talon90

Thanks for the clarification and detail.

Paul

BostonJoel

Use it in the Corvette and the 2007 Nissan. Will use it in the 2010 Nissan when the dealer dino oil change freebies run out.

Wayne O

I do OK with motor oil (sticking with Mobil 1 5W30) but I find buying toothpaste or hair conditioner confusing....way too many variations.

CodyC6

I've noticed that Mobil 1 now advertises and markets that the Extended Performance version is superior to their standard Mobil 1. So there is, according to them, a better oil providing better wear protection than Mobil 1 standard. Their marketing, even on bottles, has changed recently. I don't use it, but interesting that better wear protection is not "recommended" by GM.

Cybernetic Medic

Just to add to your confusion GM has superseded the 4718M spec. The new spec is dexos1.

http://www.sandyblogs.com/techlink/2...ification.html

For everything and more than you ever wanted to know about oil, check out BobIsTheOilGuy.com.

FNBADAZ06

There is such a discussion going on in the ZR1 section about the 0W and 40 weight oils and extreme hot weather conditions.....here in Phoenix we saw consistent temps in excess of 110 degrees all of last week, with peaks in excess of 123+ in several areas.

One desert dweller ZR1 owner reported in town driving oil temps in excess of 252+ degrees, water temps at 240+, ambient air temps of 120. The oil pressure was 26 psi at 600 RPM idle. This is a stock 2010 ZR1.

I also understand (but have not confirmed) that the oil spec for EXPORT Z06 and ZR1's for European consumption is 0W-40 Mobil 1.....maybe because of the "extreme" driving environments of the Autobahn ? Obviously, the Europeans don't have CAFE requirements or the same environmental regulations we have here in the U.S, but if the 0W-40 spec is true it might suggest the 5W-30 Mobil 1 is a compromise to meet U.S regulation.

The 0W-40 Mobil 1 does, however, contain higher concentrations of zinc and phosphorus...great for lubrication but bad for the catalyst systems.

http://www.mobil.com/usa-english/mot...duct_guide.pdf

CodyC6

I believe 0W-40 is the recommended fill for SRT8 Hemis as well. "If" the European fill for the Z06 and ZR1 "Is" different, then it does question if the regular Mobil 1 is the "best" oil for the C6.

Anybody know what the emission system warranty is on European models for the Z06 / ZR1 etc??

Turbo6TA

Jeeeze, I use 20W-50 in my Harley!

I guess that V-Twin motor just has alot more slop in it than the LS3 and needs a thicker oil.

Just seems to me that a slightly thicker oil would give a little better cushion in the main and rod bearings when the engine gets hot and extend the life of the bearings longer.

Old School idea?

PHXAZ06

For this reason, my mechanic suggested going to a 10W-30 Mobil 1. His comment was a 5W oil is already thinner than water on start up at a 115 ambient. Made sense to me, but I stuck with the 5W-30 the last oil change.
Thoughts on going to a 10W in extreme temps like we have here? (not to mention dust storms - hell, it rained mud last night)