Mobil 1 Truck & SUV

[Sierra Dan]

13 hours ago, M1ck3y said:

I've always used Castrol Edge. Its ridiculous how much it quiet's down the engine/valvetrain; at idle and under load. Afm works a million times better too, snaps in and out with no hesitation compared to the gm full synthetic. (noticeable because of my catback)

 

 As far as l86 vs lt1 oil weight. I've read that the oil delivery system is different. Believe it supply's more of it, and faster because of the lighter weight. I believe gm went this route for fuel economy and colder climates. Who drives a Camaro or vette in -20 and lower?

 

*Edit*

 

Oil delivery is the same. But they are completely different applications, the lt1 revs to 6500 and the operating temp of the oil could be different. I'm thinking its likely the truck has a much better system to maintain oil temperature and possibly keeps it at a lower temp then the lt1's. And... 19 vette's/camaro's are coming from the factory with 0w40 now. No need to switch between different grades for street or track. 

 

 

I though the Free Dealer oil changes were a Synthetic Blend?

[SS502]

1 minute ago, Sierra Dan said:

I though the Free Dealer oil changes were a Synthetic Blend?

Used to be, they moved to full synthetic...not 100% synthetic so technically still a blend. 

[TXGREEK]

Used to be, they moved to full synthetic...not 100% synthetic so technically still a blend. 

Reminds me, time to change my front and rear diff fluids. Every 10k miles with Amsoil.


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[Sierra Dan]

9 minutes ago, SS502 said:

Used to be, they moved to full synthetic...not 100% synthetic so technically still a blend. 

So in other words, basically the dealer is not filling you up with 100% synthetic unless you pay for it?

I cannot imagine GM giving away thousands of free full synthetic oil changes  

[SS502]

Just now, Sierra Dan said:

So in other words, basically the dealer is not filling you up with 100% synthetic unless you pay for it?

I cannot imagine GM giving away thousands of free full synthetic oil changes  

Well, no I meant that they have moved to "Full Synthetic" but not 100% Synthetic. There is a difference between the two...

[Grumpy Bear]

22 hours ago, SS502 said:

Here is the preface to your copy and paste...

Automakers cannot deny warranty claims solely on the basis of using synthetic motor oil, and they cannot specify a certain oil brand to be used in their vehicles. Instead, they require the oil meets the appropriate API performance classification and SAE viscosity grade specified in the owner’s manual.

Interesting wording don't you think?

 

Does a receipt assure what is in the crankcase? Does the lack of a Dexos seal mean the oil will not pass 'appropriate API performance classification and SAE viscosity grade specified in the owner manual? That answer to both is....NO! 

 

Magnuson-Moss places the burden of proof on the manufacture not the owner. A Dexos seal isn't an API nor a SAE requirement. Fancy wording and confident dealership staffing doesn't alter anything but the perception of what is true.

 

In this case GM would have to prove what is in the crankcase did not meet the standard. Period. 

[SS502]

5 minutes ago, Grumpy Bear said:

Interesting wording don't you think?

 

Does a receipt assure what is in the crankcase? Does the lack of a Dexos seal mean the oil will not pass 'appropriate API performance classification and SAE viscosity grade specified in the owner manual? That answer to both is....NO! 

 

Magnuson-Moss places the burden of proof on the manufacture not the owner. A Dexos seal isn't an API nor a SAE requirement. Fancy wording and confident dealership staffing doesn't alter anything but the perception of what is true.

 

In this case GM would have to prove what is in the crankcase did not meet the standard. Period. 

So what are you saying Marty? Use whatever you think will work and then if you have a failure to sit back and wait until they prove you were using the wrong stuff? Having records of what you've been using is better to have in hand than having nothing, or at least it does in my mind. Does it PROVE you actually used it, no but then if you're not providing honest documentation of what you've been using you are being fraudulent and we both know your feelings on being fraudulent. My intentions were not to say use DEXOS or else you burn in Hell, I am saying use the right stuff. Period.

[Grumpy Bear]

5 hours ago, SS502 said:

So what are you saying Marty? Use whatever you think will work and then if you have a failure to sit back and wait until they prove you were using the wrong stuff? Having records of what you've been using is better to have in hand than having nothing, or at least it does in my mind. Does it PROVE you actually used it, no but then if you're not providing honest documentation of what you've been using you are being fraudulent and we both know your feelings on being fraudulent. My intentions were not to say use DEXOS or else you burn in Hell, I am saying use the right stuff. Period.

Not saying anything except what the provisions of the law are. And that the way it was written suggested that Dexos certification was a requirement and pointing out it is worded to manipulate the uninformed into believing something that isn't true.

 

Just providing accurate information which I always like to have when I'm making such choices. You know me sir. I don't tell people WHAT to do. I try to be helpful telling them the truth. 

 

I place zero faith in any factory warranty. In fact I provide my own at the time of sale. I guarantee that if this device is a crap pile you will not stand behind. I'll never buy another. That makes me an odd bird. I get that. I'll eat one....but just one.

 

When I bought Pepper; Red Line was NOT DEXOS approved. I didn't ask GM anything. I ask my contact at Red Line if it meet the standards. The answer was yes and it the crankcase it went. I'm 99.9999% certain that my OCD maintenance will prevent ANY oil related failure. Any mechanical issue such as materials or workmanship NO OIL will prevent. DEXOS or otherwise. IF GM won't stand behind it, I wont' give them my business. Pretty simple plan that has never failed me.

 

I had the motor in my 06 Civic replaced 3,000 miles past warranty. Casting flaw that let water into the crankcase. The dealership wanted to not do the work because I serviced my own and used my choice of products and well, I was past warranty limits.

 

I petitioned the Regional Rep. and asked him to look up my history. He did. Three in a row and at times two at a time. I asked, really quietly, if he would like to sell me a fourth. He bought me a motor and thanked me for my loyalty and my patients. My total process time was less than a week. Just say' n. 

[SS502]

2 hours ago, Grumpy Bear said:

Not saying anything except what the provisions of the law are. And that the way it was written suggested that Dexos certification was a requirement and pointing out it is worded to manipulate the uninformed into believing something that isn't true.

 

Just providing accurate information which I always like to have when I'm making such choices. You know me sir. I don't tell people WHAT to do. I try to be helpful telling them the truth. 

 

I place zero faith in any factory warranty. In fact I provide my own at the time of sale. I guarantee that if this device is a crap pile you will not stand behind. I'll never buy another. That makes me an odd bird. I get that. I'll eat one....but just one.

 

When I bought Pepper; Red Line was NOT DEXOS approved. I didn't ask GM anything. I ask my contact at Red Line if it meet the standards. The answer was yes and it the crankcase it went. I'm 99.9999% certain that my OCD maintenance will prevent ANY oil related failure. Any mechanical issue such as materials or workmanship NO OIL will prevent. DEXOS or otherwise. IF GM won't stand behind it, I wont' give them my business. Pretty simple plan that has never failed me.

 

I had the motor in my 06 Civic replaced 3,000 miles past warranty. Casting flaw that let water into the crankcase. The dealership wanted to not do the work because I serviced my own and used my choice of products and well, I was past warranty limits.

 

I petitioned the Regional Rep. and asked him to look up my history. He did. Three in a row and at times two at a time. I asked, really quietly, if he would like to sell me a fourth. He bought me a motor and thanked me for my loyalty and my patients. My total process time was less than a week. Just say' n. 

Well said my friend, well said 

[Z45]

People claim dexos is required BUT GM only says its "Recommended engine oil OR Equivilent".  Those oil that say the meet the dexos spec but are not licensed are considered equivalent. 

Edited February 23, 2019 by elcamino

[qwank]

I'm a GM tech for 19 years, Shop foreman at my current dealership.  Of the hundreds of engines I've seen replaced, GM has NEVER once asked for proof of oil change receipts or documentation of what oil was used.  And I've replaced some really sludged up engines  that had no business being warrantied. Oil is oil, get it changed in 3-5k miles and don't hypermile your oil changes out to 10-15K and you'll never have a problem.   

 

Aftermarket 3rd party warranties will sometimes ask for proof of maintenance. Very rarely though.   

[KARNUT]

I'm a GM tech for 19 years, Shop foreman at my current dealership.  Of the hundreds of engines I've seen replaced, GM has NEVER once asked for proof of oil change receipts or documentation of what oil was used.  And I've replaced some really sludged up engines  that had no business being warrantied. Oil is oil, get it changed in 3-5k miles and don't hypermile your oil changes out to 10-15K and you'll never have a problem.   
 
Aftermarket 3rd party warranties will sometimes ask for proof of maintenance. Very rarely though.   

Why do manufacturers continue to push extended with synthetics? We were following that schedule with conventional oil. Not being argumentative, I’ve been around testing and extended for many years. I’m more confused than ever. I’m been convinced to go 5K miles on synthetics in most cases, especially with cylinder deactivation and turbo engines. I’m doubtful about even using synthetics if there’s sludge going extended. I’ve witnessed vast improvements in transmission and hydraulics with synthetics. If you’re seeing sludge with synthetics, that’s sucks.


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[qwank]

11 minutes ago, KARNUT said:

Why do manufacturers continue to push extended with synthetics? We were following that schedule with conventional oil. Not being argumentative, I’ve been around testing and extended for many years. I’m more confused than ever. I’m been convinced to go 5K miles on synthetics in most cases, especially with cylinder deactivation and turbo engines. I’m doubtful about even using synthetics if there’s sludge going extended. I’ve witnessed vast improvements in transmission and hydraulics with synthetics. If you’re seeing sludge with synthetics, that’s sucks.


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Because the government gives them kickbacks if they can say their engine can go longer between oil changes, therefore using less oil. 

 

We hear talk about government fuel economy requirements so much, we forget they have oil mileage requirements also.  

 

here's a 4.3L in a 2015 silverado that the customer was really proud of his extended oil change intervals and couldn't understand why his engine was making noise. 

 

 

 

 

 

Edited February 23, 2019 by qwank

[KARNUT]

Because the government gives them kickbacks if they can say their engine can go longer between oil changes, therefore using less oil. 
 
We hear talk about government fuel economy requirements so much, we forget they have oil mileage requirements also.  
 
here's a 4.3L in a 2015 silverado that the customer was really proud of his extended oil change intervals and couldn't understand why his engine was making noise. 
 

 
 
 
 

A picture is worth one thousand words. Thank you.


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[diyer2]

I have always done 3 K mile oil and filter changes with off the shelf products.

Proof to me that I have never had an engine failure and this is buying used vehicles.

To each their own.

Extended oil changes?

 

I doubt this will put the debate to rest.