What engine oil to use in 04 Cobra?

[mustang_guy]

Hi guys, I recently sold my 02 GT and bought an 04 Cobra.
It only has 15,500 miles on it.
As far as I know its always had oil changes done at the dealership so Im guessing 5w20.
My first oil change I plan on switching to Mobil1 but
not sure if I should go 5w30 or 10w30?

What do you recommend?

 

[Ontariomystic]

Go with 5w-30. 10w-30 is to thick for the tighter clearances in these engines

 

[03Cobrra]

Ive been using Amsoil 5w-20 since Ive had the car. Even when I drain the old oil it still looks good.

 

[twhitey]

Stay with 5-20

 

[About2bite]

In Canada I would do a 5W

Preferably a 5W30

 

[03cobra#694]

Not trying to be a Richard,but there have been countless threads on this.

 

[mustang_guy]

In Canada I would do a 5W

Preferably a 5W30

lol the car is only summer driven and we have hot summers here in Ontario

 

[mu22stang]

not sure if I should go 5w30 or 10w30?

If it's only a summer car, you'll see little to no difference between 5w30 and 10w30.

 

[SpectorV]

5w20 mobil 1 in mine

 

[XoCarChicaoX]

5w20 mobil 1 in mine

I use the same. 5w20 Mobil 1

 

[68_GT]

what's best for a hot only environment ? where is a good place to buy Amsoil oil ?

 

[Digital]

You guys wanna talk about Shells ROTELLA T? The "Miracle" Oil?

 

[spitin venom]

I usually run 5w20 but today I am going with 5w30. Either one is fine. Oh yeah, mobile 1 full synthetic.

 

[SlowSVT]

I run Amsoil 2000 0-30. Wheather it's better then any other brand or grade I cannot say :shrug:

I am not crazy about running thin oil becuase it won't have the film strength of oil with a higher viscocity but like I said "what do I know". The factory engineers would know better then anyone since they designed it and have to stand by their product.

I ran 20-50 oil all season long in New England and had 300,000 miles on the mill when I sold it and the motor ran like new. I would not run that heavy oil in our cars though.

 

[R3dn3k Flyby]

There are a ton of threads on here answering your question.

I just read all of them last Sunday:beer:

After all the research I did, I decided to go with 0w-30 Castrol Syntec. It's what's known as German Castrol since it's made in Germany and is a true synthetic. Most US made "synthetics" are oil based and thus not truly synthetic at all.

A lot of my research also made me decide to run 7 quarts rather than the factory recommended 6.

 

[blackvenom77]

I use the same. 5w20 Mobil 1

+3 :beer:

 

[Casper03]

:shrug:No Royal Purple users...........:??:

 

[Tarball]

5w20 if its just a daily driver/weekend cruiser
5w30 if you plan to do any track time in it or put a lot of miles on it.

 

[R3dn3k Flyby]

:shrug:No Royal Purple users...........:??:

I was running Royal Purple 5w-20 til making the switch to the Castrol Syntec 0w-30.

My car seems to run smoother all around, but it's only been a day at this point. We'll see how it does for the next 4k-5k

 

[Redfirecobra04]

I run 5w-20 CASTROL FULLY SYNTHETIC