[DaveC113]

Originally Posted by Bytor62

I will leave this thread now...

Are you headed to your safe space?

[trohde78]

I read the article on Bitog, and still don't fully understand what is wrong with the 5w40 MST, especially now that it's DEXOS2 certified. Is more sulphated ash going to make my engine explode at 15k miles, or are we getting way to deep into technical oil specs? My question would simply be is it better to run 5w40 MST at the track over the standard M1 5w30?

[TrackClub]

Originally Posted by DaveC113

Are you headed to your safe space?

Come on man! A brand new member about to get a Camaro, asking an obvious question based on GM official info...damn it...anyhow:

FYI Mobil1 website references "new 2010 Opels" when discussing EST. But maybe i dont get their website or maybe it is crap. No matter now.

But, check the Mobil 1 official brochure listing their oil's benefits (first page of this thread). Apart from better starts at below -20 (zero benefit for summer cars) there is nothing there that trumps any other Dexos2 oil by a long shot. That's Mobil 1 official stance re benefits. Not mine. Is it worth 50% more $?

As far as Valvoline MST being "bad advice"...You realise these were GM engineers who have singled out Valvoline MST as their *specific* recommendation in Camaro manuals for 3 years!!!
The same folk whose advice we are supposed to follow blindly. So they were wrong then, but are right now?
I dont think so...
Likely they were right both times, but GM got into a new corporate deal with Mobil 1 (and good for them btw!).

Anyhow, zero mention of Mobil 1 in any official GM 2019 owner docs regarding 0w40 oil. Neither Camaro, nor Corvette. So obviously as far as GM engineers go, as long as the oil meets their specs then it is ok. Period.

NB there are tons of us track rats who have been running Valvoline MST with zero issues. Its analysis have been published here with excellent results. I am aware of one blown cat in 3 yrs now. I dont care what "green tomatoe" thinks on Bob's blog. But i pay attention to what GM engineers say. And i follow their recommendations.

Thus far they have not steered me wrong.

Cheers and i am outta here myself now. Heading to my safe place at Napa

[TrackClub]

Originally Posted by trohde78

I read the article on Bitog, and still don't fully understand what is wrong with the 5w40 MST, especially now that it's DEXOS2 certified. Is more sulphated ash going to make my engine explode at 15k miles, or are we getting way to deep into technical oil specs? My question would simply be is it better to run 5w40 MST at the track over the standard M1 5w30?

Yes. 5w30 is approved for street ONLY
Valvoline MST Dexos2 is approved for BOTH: street and track.

Follow GM official recommendations and dont worry about blogs.

Have bags of fun at the track!

[jmhinkle]

Oil certification "seals" are 100% about paying to have it on the bottle. Most if not all quality oils would meet the dexos certification with out buying into the stamp. It's also why you can use any oil that states "meets or exceeds the following certifications..." like Amsoil in chooses to do. About MST, it was not designed for direct injection engines and does not help prevent LSPI detrimental to any direct injection engine. Your precious Dexos seal doesn't take that into account either. That's on oil engineers to make a better product and they have.

[TrackClub]

Originally Posted by jmhinkle

Oil certification "seals" are 100% about paying to have it on the bottle. Most if not all quality oils would meet the dexos certification with out buying into the stamp. It's also why you can use any oil that states "meets or exceeds the following certifications..." like Amsoil in chooses to do. About MST, it was not designed for direct injection engines and does not help prevent LSPI detrimental to any direct injection engine. Your precious Dexos seal doesn't take that into account either. That's on oil engineers to make a better product and they have.

Valvoline MST 5w40 was approved for use in Camaros BEFORE it got Dexos2 certification from GM. So it got approved on its merit vs a "seal" as you call it. That's a fact.

It also got approved by Mercedes, BMW, VW and Porsche. I guess all their engineers are complete idiots and instead should read an oil blog. Just kidding! But I'd respectfully suggest, if you wish to study oil additives then seek basic knowledge from official oil producer websites vs a blog guy named "potatoe" I assume you have noticed that this particular blog also proudly displays a "seal". Kinda ironic dont ya think? But make no mistake, no matter what we read, none of us will reach a knowledge level of a GM, or a Porsche lab chemist. Zero chance of that happening even remotely. Anyhow:

LT1 DI motor has been around for a long time now. Until Mobil came out with its new oil (and whether you think it was necessary or not: got Dexos2 certified), all C7 Vettes (now in its 6th year), lived happily with basic 5w30 which until just recently was only semi synthetic. An old oil that has been around for much longer then LT1 and has been a std factory fill. And millions of DI pick up trucks and SUVs have been produced over the years logging long miles and working hard. Ive owned a few myself. Happy to report: issue free.

And btw this old oil (now fully synthetic i believe) is still on the approved list for both Camaro and Corvette as long as folks dont track their cars.

So, the sky is not falling! And if you dont track your car you can save yourself a bundle and use 5w30. According to official GM standards. And they should know best as they built the friggin engine and all the systems it interacts with. Oh, and they also give ya a free and long powertrain warranty. Even if you track your car. But if it makes you feel better than by all means buy Mobil1 0w40 Dexos2. I suspect it is indeed a very good oil, albeit it is still very new, so a bit premature to proclaim total victory just yet. Unless one works in marketing

Whatever you do, just enjoy your car with whatever oil you like best. And if you like your warranty: use whatever one is spec'ed in your official manual. All grades listed there are fully approved and meet specific needs of us, Camaro enthusiasts.

Peace!

[jmhinkle]

It's obvious by the length of your post how uniformed you are on direct injection, but sold on what the manufacturers tell you. Not one single DI motor from any company is without issue. That's exactly why they are adding port injection back in to most of them. From valve deposits to broken ring lands, every single manufacturer is having problems and has been addressing the change on the fly as they learn. Oh wait, you said they know everything already. My bad.

[Gunkk]

The only obvious thing I see is that y'all need to

[DaveC113]

Originally Posted by TrackClub

Come on man! A brand new member about to get a Camaro, asking an obvious question based on GM official info...damn it...anyhow:

IMO he overreacted.

In any case, regardless of the qualities of Valvoline MST it's not the best option, and not the best oil for the LT1.

A lot of the reason is direct injection and preventing preignition events, which depends to a degree on oil choice. 0w40 M1 ESP is low volatility and will reduce the chances of preignition events as well as carbon deposits, and is also easier on cats and emissions equipment as well. It also has good flow at low temps, so it's better for start-up.

Here's one vid explaining some of the issues DI motors can have and it goes over oil's role in this:

[The Specialist]

I'm still looking for an answer to my question.
I'd like an answer so I can leave my safe place.
Here goes, one more time.
Reading the literature on the Mobil1 Website and various other places concerning the Dexon 2 oil, references are made " Vehicles that use " Diesel type filters "
Ok, maybe the latest and greatest Corvette is using "Diesel type filters" but what about the Camaro?
What about my Camaro?
Please help.
Does my 18 1LE have Diesel type filters?
Also,
What filters are they talking about?
Oil, Fuel or Air?
Maybe something else? The Cabin Filter?

[Airfuel]

Diesel particulate filters are on diesel engines.

Not applicable to gas engines. The other part of the esp formula applies to our car gas engines.

[trohde78]

To further clarify, the "diesel type filter" is part of the exhaust system (on a diesel).

[The Specialist]

Originally Posted by trohde78

To further clarify, the "diesel type filter" is part of the exhaust system (on a diesel).

Ok thanks,, It has nothing to do with the Camaro?
It confused me when it mentioned in the literature "Diesel type filters".
I immediately thought the latest Corvette came with Diesel type filters and it was something special.
Thanks,

[DaveC113]

Originally Posted by The Specialist

Ok thanks,, It has nothing to do with the Camaro?
It confused me when it mentioned in the literature "Diesel type filters".
I immediately thought the latest Corvette came with Diesel type filters and it was something special.
Thanks,

Basically, there should be less oil going through the car's PCV system that can gunk up the intake valves and emissions equipment, as well as contributing less to preignition events.

Our cars have catalytic converters only, AFAIK.