Gain extra benefits by becoming a Supporting Member Click here find out how!

Classic Performance Products Classic Industries
American Auto Wire
Danchuk Catalog
Hellwig Products IncPerformance Rod & CustomNu-Relics Power Windows



Username Post: 2015 engine oil        (Topic#362566)
995jim 
Contributor
Posts: 555
995jim
Loc: Ohio
Reg: 12-17-06
09-13-20 06:49 PM - Post#2803420    

Why does GM require 0-20 synthetic for the 2015 5.3 ltr engine? Is it tighter tolerances than previous models where 5-30 was accepted? Is there any alternative?
thanks jim

Jim

65' Impala SS, 65' Belair, 89' Silverado Z71, 95' Silverado Z71, 12' Silverado, 15' Silverado LTZ, 16' Tahoe LTZ


 


elcamino 
Dedicated Member
Posts: 5469
elcamino
Loc: Lake Superior-Michigan US...
Reg: 03-30-00
09-14-20 02:14 AM - Post#2803432    
    In response to 995jim

0W-20 engine oil can reduce the startup load by making it easier to turn over a cold engine and the impact is felt at higher temperatures than most consumers would think, not simply to what feels cold to humans - warm summers days are cold to an parked engine. Also these newer engines with Variable Valve Timing and Active Fuel Management (AFM)operate at peak efficiency with the oem recommended viscosity.

Mike
2017 GMC Sierra Denali Ultimate 6.2L / 8-sp Z95
2017 John Deere X738 Snow Blower
2018 Polaris RZR S 900 EPS


 
grumpyvette 
Senior Chevytalk Moderator -- Performance Subject Matter Expert --
Posts: 17541
grumpyvette
Age: 72
Loc: FLORIDA USA
Reg: 03-16-01
09-14-20 08:44 AM - Post#2803452    
    In response to elcamino

the average outside temperatures where you drive should have some influence on your choices in oil used,
here in florida as an example
most of the year we see 70F-90F
remember when chevy builds a car/truck and makes suggestions,
they don,t know if it gets sold in northern wisconsin , Alaska,
or Miami or Dallas

selecting a 10w30 or 5w30 works ok here in mid fla

at these temps oil is already easy flowing at engine start-up

http://garage.grumpysperformance.com/index.php?thr...

http://garage.grumpysperformance.com/index.php?thr...

http://garage.grumpysperformance.com/index.php?thr...

IF YOU CAN,T SMOKE THE TIRES AT WILL,FROM A 60 MPH ROLLING START YOUR ENGINE NEEDS MORE WORK!!"!
IF YOU CAN , YOU NEED BETTER TIRES AND YOUR SUSPENSION NEEDS MORE WORK!!


Edited by grumpyvette on 09-14-20 10:34 AM. Reason for edit: No reason given.

 
drtyler 
"6th Year" Gold Supporting Member
Posts: 573

Loc: Georgia
Reg: 05-06-10
09-14-20 10:39 AM - Post#2803459    
    In response to 995jim

They require it for increased fuel economy. While you may not see the very slight increase by using 0W-20, that small increase multiplied over the millions of cars & trucks that GM sells adds up for corporate fuel economy average.

GM also requires the Dexos1 rating, which has passed additional testing. Most mainstream synthetic oils have this rating, but some do not.

  • 995jim Said:
Why does GM require 0-20 synthetic for the 2015 5.3 ltr engine? Is it tighter tolerances than previous models where 5-30 was accepted? Is there any alternative?
thanks jim






 
elcamino 
Dedicated Member
Posts: 5469
elcamino
Loc: Lake Superior-Michigan US...
Reg: 03-30-00
09-17-20 03:13 AM - Post#2803631    
    In response to 995jim

From GM............
  • Quote:
Frequently Asked Questions About dexos1™ 0W20 Engine Oil

Question: Why dexos1™ 0W20 engine oil?

Answer: The new 5.3L and 6.2L V8 EcoTec3 engines available in the completely redesigned 2014 Silverado 1500 and Sierra 1500 pickup trucks are the most fuel efficient and technologically advanced engines in the market. These engines utilize an advanced combustion system that maximizes the potential of the direct injection (DI) fuel system, active fuel management (AFM), variable valve timing (VVT), two stage oil pumps and other technologies. The dexos1™ 0W20 oil supports these technologies and is an enabler for the improved fuel economy performance that is exhibited in these products.

Question: Are other automobile manufacturers recommending 0W20 engine oil for their products?

Answer: Some other manufacturers are already recommending 0W20 engine oil for their products. General Motors expects this to become an industry trend and more automobile manufacturers will be recommending the use of 0W20 engine oil in the future.

Question: What do the numbers 0W20 represent?

Answer: 0W20 represents the standard SAE measurement of oil viscosity. Viscosity is a measurement of the oil’s resistance to flow. The more resistant the oil is to flow, the higher its viscosity.

Question: If dexos1™ 0W20 oil is recommended for my vehicle’s engine, do I have to use it?

Answer: Yes. As an example, the 5.3L and 6.2L V8 EcoTec3 engines available in the 2014 Silverado 1500 and Sierra 1500 pickup trucks, were designed, engineered, validated and EPA certified using dexos1™ 0W20 oil. This is the ONLY oil approved for these engines.


Question: What if the engine Is low on oil and dexos1™ 0W20 oil is not available to top off the oil level?

Answer: There are many different retailers nationwide that sell GM licensed oil products that meet the dexos1™ specification. Refer to the first section in this Bulletin. If you are unable to locate a retailer, then a GF5 Synthetic grade 0W20 oil that meets the dexos1™ specification, such as Mobil 1™ 0W-20 Advanced Fuel Economy synthetic oil can be used. It meets or exceeds International Lubricant Standardization and Approval Committee (ILSAC) GF-5 requirements.

Question: Can another oil such as 5W30 that is cheaper and more widely available be used in place of dexos1™ 0W20 oil?

Answer: No. The 5.3L and 6.2L V8 EcoTec3 engines available in the 2014 Silverado 1500 and Sierra 1500 pickup trucks were designed, engineered and validated to run using dexos1™ 0W20 oil. This is the ONLY oil approved for these engines.


Question: What if a different viscosity oil is added to the engine other than dexos1™ 0W20 oil?

Answer: If a different viscosity oil is added to the engine other than dexos1™ 0W20 oil, GM recommends that an oil change be performed as soon as practical, but no longer than the next scheduled oil change. in order to return the engine to the original dexos1™ 0W20 oil factory requirements.

Question: Will using a different viscosity oil other than what is recommended damage the engine?

Answer: It is not possible to comment on every type and viscosity of oil that is available. Some higher viscosity oils may impact engine and fuel economy performance. Likewise for example, using a lower viscosity oil in an engine that requires 5W30 oil may not provide appropriate lubrication and may impact engine and fuel economy performance. Always follow GM recommendations and only use the oil specified in the GM Service Manual and/or the GM Owner Manual for the appropriate
Model Year/Vehicle/Engine.




The future.......................
SAE Publication
  • Quote:
2020-04-14
Development of Ultra Low Viscosity 0W-8 Engine Oil 2020-01-1425
Further fuel economy improvement of the internal combustion engine is indispensable for CO2 reduction in order to cope with serious global environmental problems. Although lowering the viscosity of engine oil is an effective way to improve fuel economy, it may reduce the wear resistance. Therefore, it is important to achieve both improved fuel economy and reliability. We have developed new 0W- 8 engine oil of ultra-low viscosity and achieved an improvement in fuel economy by 0.8% compared to the commercial 0W-16 engine oil. For this new oil, we reduced the friction coefficient under boundary lubrication regime by applying an oil film former and calcium borate detergent. The film former increased the oil film thickness without increasing the oil viscosity. The calcium borate detergent enhanced the friction reduction effect of molybdenum dithiocarbamate (MoDTC). By applying these technologies, an engine oil was developed which successfully achieved desired fuel efficiency and reliability. The developed oil also met the new JASO GLV-1 specification.

DOI: https://doi.org/10.4271/2020-01-1425
Citation: Yamamori, K., Uematsu, Y., Manabe, K., Miyata, I. et al., "Development of Ultra Low Viscosity 0W-8 Engine Oil," SAE Technical Paper 2020-01-1425, 2020, https://doi.org/10.4271/2020-01-1425.
Download Citation
Author(s): Kazuo Yamamori, Yuta Uematsu, Kazuyoshi Manabe, Itsuki Miyata, Shintaro Kusuhara, Yu Misaki
Affiliated: Toyota Motor Corporation, JXTG Nippon Oil & Energy Corp.
Pages: 7
Event: WCX SAE World Congress Experience
ISSN: 0148-7191
e-ISSN: 2688-3627






Mike
2017 GMC Sierra Denali Ultimate 6.2L / 8-sp Z95
2017 John Deere X738 Snow Blower
2018 Polaris RZR S 900 EPS


 
TAT_2 
Member #26 "19th Year" Silver Supporting Member
Posts: 36680
TAT_2
Age: 67
Loc: "UNDER THE BOARDWALK"
Reg: 10-29-00
09-17-20 03:05 PM - Post#2803683    
    In response to drtyler

  • drtyler Said:


GM also requires the Dexos1 rating, which has passed additional testing. Most mainstream synthetic oils have this rating, but some do not.




BIGFOOT OIL PASSED THE DEXOS TEST
SO DID >>>"KUM & GO"<<< !!!
https://www.gmdexos.com/brands/dexos1/index.html

09 PONTIAC- VIBE
08 PONTIAC- G6
93 VETTE - 40TH ANIV- RUBY RED- LT1/6SPD/RAG TOP
NEXT ?
PREVIOUS VETTE'S 58,68,70,76,78,85,90












 
elcamino 
Dedicated Member
Posts: 5469
elcamino
Loc: Lake Superior-Michigan US...
Reg: 03-30-00
09-17-20 07:55 PM - Post#2803704    
    In response to TAT_2



Mike
2017 GMC Sierra Denali Ultimate 6.2L / 8-sp Z95
2017 John Deere X738 Snow Blower
2018 Polaris RZR S 900 EPS


 
grumpyvette 
Senior Chevytalk Moderator -- Performance Subject Matter Expert --
Posts: 17541
grumpyvette
Age: 72
Loc: FLORIDA USA
Reg: 03-16-01
09-18-20 03:19 PM - Post#2803761    
    In response to elcamino

yeah that works... you can only buy oil the OEM specified manufacturers markets and sells at dealerships or your car/truck warranty is VOIDED
you can, bet the farm, the price per quarts quadruples and if you miss a single 3000 mile oil change the warranty is null & void

IF YOU CAN,T SMOKE THE TIRES AT WILL,FROM A 60 MPH ROLLING START YOUR ENGINE NEEDS MORE WORK!!"!
IF YOU CAN , YOU NEED BETTER TIRES AND YOUR SUSPENSION NEEDS MORE WORK!!


Edited by grumpyvette on 09-18-20 03:20 PM. Reason for edit: No reason given.

 
65_Impala 
Very Senior Member
Posts: 4548

Reg: 12-29-02
09-18-20 06:02 PM - Post#2803773    
    In response to grumpyvette

Well, that's what they want because it would be a cash cow, but luckily it's against the law to do that. It's stupid to argue for because any top tier synthetic will meet the additive requirements for most every new car.

Also, new car oil change intervals are way past 3000 miles these days. The car tells you it needs a change and the mileage varies when that happens so there is no way to predict how to change the oil before it tells you. Well, except on the cars that have a oil life remaining indication.



 
someotherguy 
Senior Moderator
Posts: 29242
someotherguy
Age: 50
Loc: Texas
Reg: 08-01-03
09-19-20 06:46 AM - Post#2803797    
    In response to 65_Impala

GM's not the only ones to try that disinformation technique. Mopar used to factory fill the SRT8's with Mobil 1, now they have a deal with Pennzoil. Mobil 1 suddenly doesn't have a "compatible" synthetic for Mopars? Yeah... shhh, there's Mobil 1 in my SRT8 (and in our SS's) ...

Richard

06 Silverado ISS / 06 Silverado SS / 06 300C SRT8


 
elcamino 
Dedicated Member
Posts: 5469
elcamino
Loc: Lake Superior-Michigan US...
Reg: 03-30-00
09-20-20 03:51 AM - Post#2803847    
    In response to someotherguy

The oil change business is very important for oem dealers like GM because over 50% of the repair business comes from seeing the customer for oil changes. They look for the opportunity to upsell you on other, often unnecessary, services such as; Fuel induction service, transmission fluid flush, replace Cabin filter, replace Air filter etc. Not to mention selling them a new vehicle. They hang out in the showrooms and look at the new trucks while the service dept looks for something they can upsell to the customer.

If you drive anything other than a GM brand vehicle and you buy oil with a dexos logo on it, GM is making money off your purchase. Oil companies pay GM for the right to display the logo. Not to mention their chosen firm that approves it.

Btw, those no name oil companies with a dexos license are just rebranding an oil from some other additive or oil company that has a licensed formula they SELL. They save the $100,000+ GM testing fee for the certification, they just have pay a % royalty on their market share to GM.



Mike
2017 GMC Sierra Denali Ultimate 6.2L / 8-sp Z95
2017 John Deere X738 Snow Blower
2018 Polaris RZR S 900 EPS


 
docjns1 
Gold Supporting Member
Posts: 109
docjns1
Loc: upstate NY
Reg: 11-12-19
09-20-20 05:50 AM - Post#2803854    
    In response to 995jim

All of the above are great points! To Jim's replies, advances in engine tech (VVT and the like) often include solenoids or actuators that are driven by oil pressure rather than electronics hence an incorrect viscosity can often cause a malfunction whether or not one can feel it while driving. These subtle changes can effect emissions and often will illuminate the infamous "Check engine" light and/or set a code. The article referring to GM's position is misleading, especially the last paragraph, as oil changes are not considered warranty repairs but maintenance and the re$pon$ibility of the owner. Warranty repairs are an expense to the mfr as they reimburse the dealers for work performed. Oil changes are never money makers for dealers, rather "loss leaders" to bring you back. Upselling is a process used in many industries and retail businesses and yes, some folks take advantage of the opportunity to sell goods/services unnecessarily or at shortened intervals. At our dealership (MOPAR) we are stocking at least 7 or 8 grades of oil to meet our requirements. The mass merch argument is null in my opinion as the large nationals often have better purchasing arrangements than individual dealers can arrange (most dealers are independent owner/operators). Bottom line is your vehicle was engineered to perform best with the specified lubricants and grade/quality of parts provided by the mfr to meet their reliability standards. This all plays into vehicle performance, owner satisfaction and repeat business. BUSINESS being the key operative here as we all know the auto biz is what's driven the US economy for over a century.

Steve
*********
'65 Impala SS, Crocus Yellow/blk
327 / 300 L74
M11 3 on the tree
12 bolt 3.31 open dif


 


Icon Legend Permissions Topic Options
Report Post

Quote Post

Quick Reply

Print Topic

Email Topic

419 Views
FusionBB
FusionBB™ Version 2.1
©2003-2006 InteractivePHP, Inc.
Execution time: 0.261 seconds.   Total Queries: 17   Zlib Compression is on.
All times are (GMT -0800) Pacific. Current time is 12:17 PM
Top