Synthetic Oil?

[Wisha Haddan H3]

afaik, only Mobil 1, Chevron Supreme Synthetic and Texaco Havoline Synthetic meet the GM4718M spec for synthetic oil. Not that every other synthetic is worthless ... they just may not be certified yet.

I'm a big fan of Mobil1 and have used it in all my vehicles. Makes cold startups a LOT easier.

[f5fstop]

Not really, Valvoline, Pennzoil, Amsoil ASL (Amsoil XLF full syn, Group III, does not, but it meets the 6094 spec...go figure that one, since both are labeled full synthetic), and Castrol also meet the GM synthetic oil spec, in their respective FULL synthetic oils. There may be others too, but these I know for sure do meet the spec (4718).
In addition, Mobil 1 and Amsoil's ASL are the only two PAO/Group IV synthetic motor oils on the market. The remainder, including Amsoil's XLF are Group III hydro-cracked synthetic oils. This last bit of info basically means nothing since the important thing is the oil meets or exceeds the GM required spec.

[Wisha Haddan H3]

Thanks for the correction F5

[deserth3]

Thanks for the info. If you go to the Mobil 1 website it says Mobil 1 EP is right for your car...

http://www.mobiloil.com/usa-english/...ilOption2.aspx

What's the right oil for my car?


Our products in the viscosity right for your vehicle

We've taken what you told us about your vehicle and driving conditions, and using an auto industry database, have determined our products in the viscosity recommended by your vehicle manufacturer. These products are shown categorized by the level of protection they provide. To learn more about a product, click its name.



Current Vehicle:
Year: 2006
Make: Hummer
Model: H3
Engine Type: 5cyl. 3.5Liter






Ultimate Protection

Mobil 1 Extended Performance 5W-30
Mobil 1 Extended Performance 5W-30 fully synthetic motor oil is designed for today's longer service intervals. It provides guaranteed performance and protection for 15,000 miles or one year. Mobil 1 Extended Performance products with the Advanced SuperSyn System contain extra performance additives to help deliver outstanding engine protection.

Mobil 1 5W-30
A fully synthetic motor oil, Mobil 1 5W-30 with SuperSyn Technology, is the approved and the first choice of many premium car manufacturers, including Corvette.

Mobil 1 Truck & SUV 5W-30
A fully synthetic motor oil, Mobil 1® Truck & SUV 5W-30 is engineered for gasoline engines in hard-working trucks, vans, SUVs and recreational vehicles.

[f5fstop]

Originally Posted by deserth3

Thanks for the info. If you go to the Mobil 1 website it says Mobil 1 EP is right for your car...

http://www.mobiloil.com/usa-english/...ilOption2.aspx

What's the right oil for my car?


Our products in the viscosity right for your vehicle

We've taken what you told us about your vehicle and driving conditions, and using an auto industry database, have determined our products in the viscosity recommended by your vehicle manufacturer. These products are shown categorized by the level of protection they provide. To learn more about a product, click its name.



Current Vehicle:
Year: 2006
Make: Hummer
Model: H3
Engine Type: 5cyl. 3.5Liter






Ultimate Protection

Mobil 1 Extended Performance 5W-30
Mobil 1 Extended Performance 5W-30 fully synthetic motor oil is designed for today's longer service intervals. It provides guaranteed performance and protection for 15,000 miles or one year. Mobil 1 Extended Performance products with the Advanced SuperSyn System contain extra performance additives to help deliver outstanding engine protection.

Mobil 1 5W-30
A fully synthetic motor oil, Mobil 1 5W-30 with SuperSyn Technology, is the approved and the first choice of many premium car manufacturers, including Corvette.

Mobil 1 Truck & SUV 5W-30
A fully synthetic motor oil, Mobil 1? Truck & SUV 5W-30 is engineered for gasoline engines in hard-working trucks, vans, SUVs and recreational vehicles.

I'm sure they will say it is right for your car (truck), but all I'm saying is I see no notice that it is approved by the GM standards. In addition, since Mobil 1 exceeds what you should be using, you are paying a premium for an oil you probably do not require, that for some reason, has not passed the GM spec.
I'm sure it is good oil, and I'm would almost bet it won't hurt the engine.

[DeLeon]

What kind of oil filter would you guys recommend if I'm going to switch to synthetic oil?

[deserth3]

f5f I hope I didn't come across as arguing with you. I wasn't. It's just a pain for a layman to make sense of certifications, ect. Especialy when most of the info is put outby oil companies who want to make their product look better.

Originally Posted by DeLeon

What kind of oil filter would you guys recommend if I'm going to switch to synthetic oil?

I use Fram's Tough Guard or Extra Guard. I don't know how long the fiters are good for. Fram's site doesn't address this though they do make a 7000 mile oil filter. I think that's new because I don't remember seeing it several months ago.

[f5fstop]

Originally Posted by deserth3

f5f I hope I didn't come across as arguing with you. I wasn't. It's just a pain for a layman to make sense of certifications, ect. Especialy when most of the info is put outby oil companies who want to make their product look better.



I use Fram's Tough Guard or Extra Guard. I don't know how long the fiters are good for. Fram's site doesn't address this though they do make a 7000 mile oil filter. I think that's new because I don't remember seeing it several months ago.

I am not arguing with you, I'm just letting you know that it appears the Mobil EP oil does not meet GM specs, and thought you might like to know that, since many do not look at the specs (which you admit you don't pay attention too.)
I'm sure the oil is ok, and is good. I was just trying to inform you...and you take it as an argument. Please understand, I dont' care what you use.....you can use re-cycled bulk oil in the engine.

So, I feel this conversation is over....

[Hmmm2]

Originally Posted by f5fstop

So, I feel this conversation is over....