Help with Oil question Motor Craft 5w20(Super Premium Oil)

[buddy255]

I was going to get oil and I could have sworn that last year the MotorCraft 5w20 said on the bottle Super Premium Oil, that is what is in the manual. But the guy at Auto Zone said that they changed the bottle on the 5w20 to say synthetic oil it's the samething??? Does this sound right?

Thanks

 

[Black2003Vert]

Use full synthetic oil in your terminator. Dont worry about the motorcraft synthetic blend.

 

[mystic04]

mobil one 10w 30 or 5w 20

 

[HISSMAN]

The only true full synthetic on the market now are Royal purple, Amsoil, Redline, and a few other big names. Mobil 1 is no longer a full synthetic. I will be switching to Amsoil after years and years of running nothing but M1.

-Jeff

 

[Juruense]

I also will be switching to Amsoil and I am very disappointed with Mobil1's decision

When I first got my Cobra I decided I would be "by the book" and use Motorcraft 5W-20 synthetic blend oil. I immediately noticed an annoying tick from the driver's head when the car was fully up to temp.

Switched to Mobil1 5W-30 and the tick is almost completely gone.

FYI never listen to the guy at AutoZone, EVER.

 

[HISSMAN]

Yeah, the guy at autozone is making minimum wage, has probably only worked there for a month or so, will probably only be there another month before he quits, and drives a 1989 Honda. Not exactly a guy I would take mechanical advice from.

-Jeff

 

[buddy255]

So if I went by the book, which says Super Premium Oil, but Motorcraft website only shows SAE 5W-20 Premium Synthetic Blend Motor Oil. This replaces the SPO?

 

[HISSMAN]

Same thing.

IMO though, I would run a 5w30 oil. Regardless of what Ford says.

 

[buddy255]

Can you educate my why?

 

[HISSMAN]

5w20 is too thin. Most cobra owners run 5w30 in their cars. I think that the 5w20 was used as more of a way to get a better emissions/mpg rating.

 

[buddy255]

Does it do anything performance wise, better or worse for the engine overall by running the 5w30?

I appreciate the information,

 

[HISSMAN]

It is my opinion that the 5w20 is too thin.

 

[wiltshp]

buddy, I think you are fine with 5w 20. The two numbers stand for the viscosity when the oil is cold and when the oil is at operating temperature. Too get an oil to have more than one viscosity (straight weight oils only have one weight I.E. SAE 30) they have to add polymers to the oil that straighten out when the oil gets warm to give it a thicker property. The further the two numbers are apart 5w20 vs. 5w 30, the more polymers they have to add. This takes away from the oil's abilty to lubricate, which is it's primary purpose.

 

[wiltshp]

buddy, I think you are fine with 5w 20. The two numbers stand for the viscosity when the oil is cold and when the oil is at operating temperature. Too get an oil to have more than one viscosity (straight weight oils only have one weight I.E. SAE 30) they have to add polymers to the oil that straighten out when the oil gets warm to give it a thicker property. The further the two numbers are apart 5w20 vs. 5w 30, the more polymers they have to add. This takes away from the oil's abilty to lubricate, which is it's primary purpose.

 

[jm@ReischePerf]

It is my opinion that the 5w20 is too thin.

I agree, especially in a warmer climate.

 

[Juruense]

When I first got my Cobra I decided I would be "by the book" and use Motorcraft 5W-20 synthetic blend oil. I immediately noticed an annoying tick from the driver's head when the car was fully up to temp.

Switched to Mobil1 5W-30 and the tick is almost completely gone.

 

[8Sec03Cobra]

I have used nothing but the Motorcraft 5w20 synthetic blend in mine since it was new. I beat the car constantly and have never had any issues with it. I guess really it is all just personal preferance though

 

[buddy255]

Thanks for the information everyone,

 

[evans03c]

It is my opinion that the 5w20 is too thin.

It does seem that it is too thin but I don't know enough about it to understand why Ford recommends it for these engines. Don't they always err on the conservative side with oils (thicker)?

 

[1svtfan]

The only true full synthetic on the market now are Royal purple, Amsoil, Redline, and a few other big names. Mobil 1 is no longer a full synthetic. I will be switching to Amsoil after years and years of running nothing but M1.

-Jeff

Just curious where you got your info. The website still states that it is fully synthetic, as does the bottle. Do you have any inside dirt, or did I just miss something?

EDIT:
Is Mobil 1 with SuperSyn Technology a fully synthetic motor oil?

Yes, it is. To meet the demanding requirements of today's specifications (and our customers' expectations), Mobil 1 with SuperSyn uses high-performance fluids, including polyalphaolefins (PAOs), along with a proprietary system of additives. Each Mobil 1 with SuperSyn viscosity grade uses a unique combination of synthetic fluids and selected additives in order to tailor the viscosity grade to its specific application.



Steve