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#4759704 - 05/17/18 10:25 AM Dexos1 Gen2 and Timing Chain Wear Question
GravelRoad Offline


Registered: 05/30/15
Posts: 153
Loc: Virginia
Does Dexox1 Gen2 suppose to lower timing chain wear? Or just for LSPI?
_________________________
2016 Subaru Outback Premium. PUP 5w30 oem filter
2013 Hyundai Elantra loaded. lifetime free oil/filter change

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#4759720 - 05/17/18 10:36 AM Re: Dexos1 Gen2 and Timing Chain Wear Question [Re: GravelRoad]
oil_film_movies Offline


Registered: 06/13/16
Posts: 2432
Loc: MN
Originally Posted By: GravelRoad
Does Dexox1 Gen2 suppose to lower timing chain wear? Or just for LSPI?
Both.

GM has developed four new engine tests for this updated specification:

New General Motors Oxidation & Deposit Test (GMOD) verifies the improved oxidation and deposit control characteristics.
New Stochastic Pre-ignition Test verifies the added protection for turbocharged engines and pre-ignition concerns.
New Turbocharger Deposit Test verifies the added protection for turbocharged engines and minimizes deposit formation, which ensures optimal performance during engine life.
New Aeration Test (bubble control) ensures the air bubbles in the oil dissipate quickly to improve oil performance.
New Timing Chain wear (stretch) test.

It could be that oils were already good at timing chain and LSPI issues, but the dexos1 Gen2 tests prove something to us.


Edited by oil_film_movies (05/17/18 10:38 AM)

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#4759793 - 05/17/18 11:49 AM Re: Dexos1 Gen2 and Timing Chain Wear Question [Re: oil_film_movies]
GravelRoad Offline


Registered: 05/30/15
Posts: 153
Loc: Virginia
Originally Posted By: oil_film_movies
Originally Posted By: GravelRoad
Does Dexox1 Gen2 suppose to lower timing chain wear? Or just for LSPI?
Both.

GM has developed four new engine tests for this updated specification:

New General Motors Oxidation & Deposit Test (GMOD) verifies the improved oxidation and deposit control characteristics.
New Stochastic Pre-ignition Test verifies the added protection for turbocharged engines and pre-ignition concerns.
New Turbocharger Deposit Test verifies the added protection for turbocharged engines and minimizes deposit formation, which ensures optimal performance during engine life.
New Aeration Test (bubble control) ensures the air bubbles in the oil dissipate quickly to improve oil performance.
New Timing Chain wear (stretch) test.

It could be that oils were already good at timing chain and LSPI issues, but the dexos1 Gen2 tests prove something to us.


That answers my question. Thank you.
_________________________
2016 Subaru Outback Premium. PUP 5w30 oem filter
2013 Hyundai Elantra loaded. lifetime free oil/filter change

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#4759825 - 05/17/18 12:26 PM Re: Dexos1 Gen2 and Timing Chain Wear Question [Re: oil_film_movies]
HondaBroMike Offline


Registered: 11/02/17
Posts: 312
Originally Posted By: oil_film_movies
Originally Posted By: GravelRoad
Does Dexox1 Gen2 suppose to lower timing chain wear? Or just for LSPI?
Both.

GM has developed four new engine tests for this updated specification:

New General Motors Oxidation & Deposit Test (GMOD) verifies the improved oxidation and deposit control characteristics.
New Stochastic Pre-ignition Test verifies the added protection for turbocharged engines and pre-ignition concerns.
New Turbocharger Deposit Test verifies the added protection for turbocharged engines and minimizes deposit formation, which ensures optimal performance during engine life.
New Aeration Test (bubble control) ensures the air bubbles in the oil dissipate quickly to improve oil performance.
New Timing Chain wear (stretch) test.

It could be that oils were already good at timing chain and LSPI issues, but the dexos1 Gen2 tests prove something to us.


^ this, recognize.
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#4760175 - 05/17/18 05:36 PM Re: Dexos1 Gen2 and Timing Chain Wear Question [Re: GravelRoad]
tig1 Offline


Registered: 01/03/09
Posts: 13587
Loc: Illinois
I have never had timing chain wear as for as I know. Some engines over 300K.
_________________________
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#4760195 - 05/17/18 05:55 PM Re: Dexos1 Gen2 and Timing Chain Wear Question [Re: tig1]
Carbuff Offline


Registered: 12/11/06
Posts: 143
Loc: Lost in the Garden State
Originally Posted By: tig1
I have never had timing chain wear as for as I know. Some engines over 300K.


I have read that letting the oil level get very low (or not doing changes at recommended OCIs) will induce timing chain stretch or failure in some makes.


Can't EVER imagine that happening to a BITOGer, though. grin
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#4760216 - 05/17/18 06:20 PM Re: Dexos1 Gen2 and Timing Chain Wear Question [Re: Carbuff]
oil_film_movies Offline


Registered: 06/13/16
Posts: 2432
Loc: MN
Originally Posted By: Carbuff
I have read that letting the oil level get very low (or not doing changes at recommended OCIs) will induce timing chain stretch or failure in some makes.
DI and turbo+DI soot has been blamed the most. Its a very small grit that makes it past the oil filters, like around 1 micron or less in size, and filters only get out particles greater than 20 microns in general:
"Chain wear is caused by GDI soot, a carbonaceous contaminant unique to T/GDI engines that causes accelerated timing chain wear. It has been proven that advanced lubricant additive technology can have a positive impact on both LSPI and chain wear."---Lubrizol statement, and https://phys.org/news/2016-07-gasoline-direct-green-choice.html and https://link.springer.com/chapter/10.1007%2F978-981-10-7185-0_6

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#4760224 - 05/17/18 06:30 PM Re: Dexos1 Gen2 and Timing Chain Wear Question [Re: GravelRoad]
nap Online   content


Registered: 04/27/18
Posts: 235
Loc: Canada
Could timing belts become fashionable again?

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#4760251 - 05/17/18 07:04 PM Re: Dexos1 Gen2 and Timing Chain Wear Question [Re: GravelRoad]
Bryanccfshr Offline


Registered: 10/09/04
Posts: 5682
Loc: Durango, Co
Keep intervals to 5kmiles andmget the soot out.
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#4760269 - 05/17/18 07:22 PM Re: Dexos1 Gen2 and Timing Chain Wear Question [Re: nap]
PimTac Offline


Registered: 03/04/17
Posts: 3876
Loc: Soviet State of Washington
Originally Posted By: nap
Could timing belts become fashionable again?



Could a timing belt hold up to the same conditions? There are also the guides and sprocket gears.
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#4760872 - 05/18/18 11:01 AM Re: Dexos1 Gen2 and Timing Chain Wear Question [Re: oil_film_movies]
GravelRoad Offline


Registered: 05/30/15
Posts: 153
Loc: Virginia
Originally Posted By: oil_film_movies
Originally Posted By: Carbuff
I have read that letting the oil level get very low (or not doing changes at recommended OCIs) will induce timing chain stretch or failure in some makes.
DI and turbo+DI soot has been blamed the most. Its a very small grit that makes it past the oil filters, like around 1 micron or less in size, and filters only get out particles greater than 20 microns in general:
"Chain wear is caused by GDI soot, a carbonaceous contaminant unique to T/GDI engines that causes accelerated timing chain wear. It has been proven that advanced lubricant additive technology can have a positive impact on both LSPI and chain wear."---Lubrizol statement, and https://phys.org/news/2016-07-gasoline-direct-green-choice.html and https://link.springer.com/chapter/10.1007%2F978-981-10-7185-0_6


Thanks again oil_film_movies! Your always helpful. thumbsup
_________________________
2016 Subaru Outback Premium. PUP 5w30 oem filter
2013 Hyundai Elantra loaded. lifetime free oil/filter change

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