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CorvetteForum - Chevrolet Corvette Forum Discussion (https://www.corvetteforum.com/forums/)
-   C6 Corvette General Discussion (https://www.corvetteforum.com/forums/c6-corvette-general-discussion-74/)
-   -   Who's going to change to the Mobil 1, 0W-40 (https://www.corvetteforum.com/forums/c6-corvette-general-discussion/4106086-whos-going-to-change-to-the-mobil-1-0w-40-a.html)

c6miller 02-23-2018 05:37 PM
Who's going to change to the Mobil 1, 0W-40
 
Been using 5W-30 since new (7 years) Mobil says we should change to the new formula. Is anyone going to switch?

919cw313 02-23-2018 05:43 PM
Nope.

HBsurfer 02-23-2018 05:46 PM
Where did you see Mobil telling us to change? A tv commercial or a magazine ad means nothing to me. If it is stated in an article that gives a solid reason that makes sense to me, I would listen. If not, I will stay with what GM says since they designed the engine.

Vette_DD 02-23-2018 06:07 PM
Originally Posted by c6miller (Post 1596657126)
Who's going to change to the Mobil 1, 0W-40 Been using 5W-30 since new (7 years) Mobil says we should change to the new formula. Is anyone going to switch?
I wasn't aware that Mobil had either built your engine or was guaranteeing it.

Stick with what your owner's manual says.

SixAddict 02-23-2018 06:28 PM
Guess I'll stay with what works? Why would I change now, all is well.

jrose7004 02-23-2018 06:39 PM
No I'm not changing.

Dano523 02-23-2018 06:43 PM
the thinner the oil, the lower your oil pressure is going to be a idle instead. Hence if your oil pressure is below say 30lbs at idle, you already have problems, and going with a thinner oil is going to push you even more in the wrong direction instead.

sjw91 02-23-2018 07:42 PM
Originally Posted by Dano523 (Post 1596657640)
the thinner the oil, the lower your oil pressure is going to be a idle instead. Hence if your oil pressure is below say 30lbs at idle, you already have problems, and going with a thinner oil is going to push you even more in the wrong direction instead.
It's a 40 weight, it's not thinner oil. On startup, above freezing temperatures, there is essentially no difference between a 0 and 5.

C6s in Europe have always used 0w40.

89Roadster 02-23-2018 07:44 PM
I changed to 0W40 a while back when Mobil had it on sale plus a $12 rebate. Ran the hell out of it all summer.

buckmeister2 02-23-2018 10:27 PM
Why would anyone? It is the same oil with an expanded viscosity rating. If the 5-30 is fine, why change?

Nice Ride 02-23-2018 10:30 PM
I am going to stay with the OEM/factory recommendation printed on the oil filler cap.

Bruze 02-23-2018 10:36 PM
1 Attachment(s)
I'm waiting for 1¼W-30, then Imma changing.


Attachment 48336260

Vet Interested 02-24-2018 12:06 AM
I thought I read where GM recommends it for LT engines in the C7. Not the LS motors in the C6. So no I am not switching.

pielet97 02-24-2018 12:29 AM
https://www.corvetteforum.com/forums...fill-0w40.html

HBsurfer 02-24-2018 01:04 AM
Originally Posted by pielet97 (Post 1596659608)
That thread is discussing Tadge's recommendation for C7's. This is the C6 section. Different engines. Different oil.

LMB-Z 02-24-2018 02:01 AM
In answer to your question...no, I'm not changing. On the other hand, 5w-30, 0w-40...not enough difference in my opinion to make a difference, but then I'm not an oil or engine engineer. I've been told to use Motul, but I've never heard of it before. I also have a friend who thinks Pennzoil is the only oil made. I'll stick with Mobile 1 5w30. Its worked this long.

Bruze 02-24-2018 02:35 AM
The brand doesn't matter. As long as the SAE(?) numbers on the bottle meet the manufacturer's specs, you're fine.

Don-Vette 02-24-2018 05:27 AM
Why would I put any other weight oil in my car other than what is recommended in my owners manual? only a dumbass who knows nothing about engines would do that. IMO

:crazy2::crazy2::crazy2:

pielet97 02-24-2018 07:32 AM
Originally Posted by HBsurfer (Post 1596659701)
That thread is discussing Tadge's recommendation for C7's. This is the C6 section. Different engines. Different oil.
Really? I thought that was so obvious, I didn’t need to state it. Guess not.

Dman302 02-24-2018 08:21 AM
Originally Posted by Dano523 (Post 1596657640)
the thinner the oil, the lower your oil pressure is going to be a idle instead. Hence if your oil pressure is below say 30lbs at idle, you already have problems, and going with a thinner oil is going to push you even more in the wrong direction instead.
this is so inaccurate it’s comical. Idle pressure on the non dry sump engines is rarely over or at 30 psi when oil is over around 200 deg for most LS engines....and that is normal. The high weight is the same as what is spec so the high temp viscosity is the same as spec. The low weight mumber means better viscosity flow when colder than 5 weight. You want the oil moving around with ease when cold. 0-30w is actually a better oil for northern cars in the cold months.


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