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DOHC/Timing chain Mix?

Posted By: daman

DOHC/Timing chain Mix? - 04/06/19 02:01 PM

Guys I have a 2012 GM Inline 5 cyl 3.7 with a DOHC and a big timing chain, looking for maximum anti-wear for the cam lobes but mostly for this timing chain, as its a bear to change out.

The mix I have on hand I was going to use is 6qts SM M1 0w40 and a can of Lubro-Moly Mos2, that's looking like it should give me a boat of my anti wear adds.

OR...should I go with just M1 dexos 5w30 as I know that's a stringent spec.

Looking at these VOA's I'll probably go with my mix? thoughts?

LM
https://www.bobistheoilguy.com/foru...9/lubro-moly-mos2-antifriction-treatment

SM 0w40
https://www.bobistheoilguy.com/forums/ubbthreads.php/topics/1722539/mobil-1-0w40-voa
Posted By: Trav

Re: DOHC/Timing chain Mix? - 04/06/19 02:05 PM

The 0w40 will provide all the anti wear additives that are needed, forget the MoS2.
Posted By: skyactiv

Re: DOHC/Timing chain Mix? - 04/06/19 03:24 PM

Here's my opinion.
The tiniest particles in used engine oil affect the timing chain and it's related components while not affecting other engine parts.
So if your concerned about such wear, I recommend shorter oil change intervals such as 5K miles.
UOA's wont show you the wear rate of the timing chain in my opinion.

Seriously, which lubricated parts seem to wear out inside of today's modern engines? The timing chain and it's related components.
Posted By: JLTD

Re: DOHC/Timing chain Mix? - 04/06/19 04:59 PM

Awhile back, someone posted a study that indicated a 10w offered more timing chain wear protection than a 5w or 0w.

Based on that I would consider a 10w-40 summer and your 0w-40 for winter.
Posted By: bbhero

Re: DOHC/Timing chain Mix? - 04/06/19 08:36 PM

Originally Posted by skyactiv
Here's my opinion.
The tiniest particles in used engine oil affect the timing chain and it's related components while not affecting other engine parts.
So if your concerned about such wear, I recommend shorter oil change intervals such as 5K miles.
UOA's wont show you the wear rate of the timing chain in my opinion.

Seriously, which lubricated parts seem to wear out inside of today's modern engines? The timing chain and it's related components.




A great post here in my opinion ^^↑^^^^^^^
Posted By: Linctex

Re: DOHC/Timing chain Mix? - 04/06/19 08:50 PM

Originally Posted by skyactiv

The tiniest particles in used engine oil affect the timing chain and it's related components while not affecting other engine parts.



I guess we should all be running added-on bypass oil filters
Posted By: daman

Re: DOHC/Timing chain Mix? - 04/06/19 09:55 PM

Thanks guys, Trav I do believe the MoS2 will be a benefit as the 0w40 is lacking some IMO for this application, I do plan on shortening the OCI to 5k tops and using a FRAM ultra.
Posted By: daman

Re: DOHC/Timing chain Mix? - 04/06/19 09:56 PM

Originally Posted by JLTD
Awhile back, someone posted a study that indicated a 10w offered more timing chain wear protection than a 5w or 0w.

Based on that I would consider a 10w-40 summer and your 0w-40 for winter.


Hmmm I must have missed that, thanks for the tip I may consider that next OC.
Posted By: Garak

Re: DOHC/Timing chain Mix? - 04/06/19 09:57 PM

I'd say there's nothing wrong with just running an A3/B4 as it is, like the M1 0w-40 or any of the competition.
Posted By: OilUzer

Re: DOHC/Timing chain Mix? - 04/06/19 11:41 PM

Originally Posted by JLTD
Awhile back, someone posted a study that indicated a 10w offered more timing chain wear protection than a 5w or 0w.

Based on that I would consider a 10w-40 summer and your 0w-40 for winter.


Interesting since under operating temps where the engine spends most of its time, any xW30 will be a 30 assuming that 0x or 5x or 10x had relatively similar hths to begin with. Were they talking about 10W shearing less as oppose to 0 or 5W?

I will have to search for this study!
Posted By: Garak

Re: DOHC/Timing chain Mix? - 04/07/19 12:19 AM

If one is concerned with VIIs, while motor oil has improved, I'm not sure a 10w-40 would be my choice of oils. If running conventional and worried about VIIs, I'd be looking to a 10w-30 or a 15w-40 first, assuming one isn't interested in monogrades (again, leaving aside the other end of the spectrum, high end VII free multigrades which are also, by definition, monogrades).
Posted By: Brigadier

Re: DOHC/Timing chain Mix? - 04/07/19 12:32 AM

Seeing as you don't have GDI, run a stout 5W30 and a bottle of Hy-per Lube ZRA.
Posted By: kstanf150

Re: DOHC/Timing chain Mix? - 04/07/19 12:52 AM

I guess so
Never knew the tiny particles affect the timing chain so much
I’m not gonna worry about my rod and main bearings my rings and valve seals and guides anymore
I’ll sleep better at night now 👍
Posted By: dave1251

Re: DOHC/Timing chain Mix? - 04/07/19 01:02 AM

Originally Posted by daman
Thanks guys, Trav I do believe the MoS2 will be a benefit as the 0w40 is lacking some IMO for this application, I do plan on shortening the OCI to 5k tops and using a FRAM ultra.



Other than advertising hype do you have evidence MoS2 does anything?
Posted By: Bryanccfshr

Re: DOHC/Timing chain Mix? - 04/07/19 01:39 AM

Just run the A3 0w40 and sleep well at night. It is a full SAPs formulation and is well additized in the proper balance for the quality additives it uses. Adding other antiwear additives could render the package less effective than as designed.
Posted By: daman

Re: DOHC/Timing chain Mix? - 04/07/19 03:32 PM

Originally Posted by dave1251
Originally Posted by daman
Thanks guys, Trav I do believe the MoS2 will be a benefit as the 0w40 is lacking some IMO for this application, I do plan on shortening the OCI to 5k tops and using a FRAM ultra.



Other than advertising hype do you have evidence MoS2 does anything?

Well sure, Mo is a friction modifyer is added to oil in the first place right? if there is no benefit why is it there.
Posted By: dave1251

Re: DOHC/Timing chain Mix? - 04/07/19 03:44 PM

Originally Posted by daman
Originally Posted by dave1251
Originally Posted by daman
Thanks guys, Trav I do believe the MoS2 will be a benefit as the 0w40 is lacking some IMO for this application, I do plan on shortening the OCI to 5k tops and using a FRAM ultra.



Other than advertising hype do you have evidence MoS2 does anything?

Well sure, Mo is a friction modifyer is added to oil in the first place right? if there is no benefit why is it there.



What benefit is it for you to add it? You did not research, develop, test, and refine it while adding it to a finished product. At best it's doing no harm.
Posted By: PimTac

Re: DOHC/Timing chain Mix? - 04/07/19 03:48 PM

Moly is already in the oil along with other friction modifiers.
Posted By: Puckrobber

Re: DOHC/Timing chain Mix? - 04/07/19 06:24 PM

My understanding, from reading this forum, was that motor oils that have certain additives, would have those additives cancelled out if you add another additive-filled lubricant to the mix. Am I understanding that wrong? At the most, I couldn't imagine it doing any harm to the engine, but, it wouldn't benefit it, either.
Posted By: Kamele0N

Re: DOHC/Timing chain Mix? - 04/07/19 06:40 PM

According to this topic...

https://www.bobistheoilguy.com/foru...additives-are-best-for-timing-chain-life

I would seek for sae40 oils with higher MoDTC levels....and would do OCIs between 10-15kkms (dunno how many miles is that :P )

Has anybody posted Rotella T6 15w40 VOA yet?
Posted By: Triple_Se7en

Re: DOHC/Timing chain Mix? - 04/07/19 08:14 PM

Originally Posted by Puckrobber
My understanding, from reading this forum, was that motor oils that have certain additives, would have those additives cancelled out if you add another additive-filled lubricant to the mix. Am I understanding that wrong? At the most, I couldn't imagine it doing any harm to the engine, but, it wouldn't benefit it, either.

Baloney! Your vehicle will run (possibly even better) blending multi oil brands and multi viscosities. I've been doing it for 30 years and I'm first and last owner of my vehicles.


But.... keep in-mind, I've never exceeded 7K OCIs. OCIs of my length are how you keep the same vehicle and never even change valve cover gaskets, in 18 or-so years of driving it. I don;t even get sludge at 7K. Nor do I get streaky oil, smelly oil, burnt oil or sooty oil..... all signs of something bad going on with your oil and/or engine.

But Pt 2..... I now own a GDI engine. So that non-sooty mention may end someday.....lol
Posted By: Puckrobber

Re: DOHC/Timing chain Mix? - 04/08/19 12:14 AM

Originally Posted by Triple_Se7en
Originally Posted by Puckrobber
My understanding, from reading this forum, was that motor oils that have certain additives, would have those additives cancelled out if you add another additive-filled lubricant to the mix. Am I understanding that wrong? At the most, I couldn't imagine it doing any harm to the engine, but, it wouldn't benefit it, either.

Baloney! Your vehicle will run (possibly even better) blending multi oil brands and multi viscosities. I've been doing it for 30 years and I'm first and last owner of my vehicles.


But.... keep in-mind, I've never exceeded 7K OCIs. OCIs of my length are how you keep the same vehicle and never even change valve cover gaskets, in 18 or-so years of driving it. I don;t even get sludge at 7K. Nor do I get streaky oil, smelly oil, burnt oil or sooty oil..... all signs of something bad going on with your oil and/or engine.

But Pt 2..... I now own a GDI engine. So that non-sooty mention may end someday.....lol


Oh, I know mixing oil brands and viscosities is OK. Plenty of Frankenbrews on this forum. I was just wondering about extra fluids like oil treatments or "super concentrated extra moly" boosters that claim to help your engine. Can't imagine they'd be worth the price and effort. I miss the days of just using a great oil and not worrying if it has enough of this, that or anything else. 😊
Posted By: PimTac

Re: DOHC/Timing chain Mix? - 04/08/19 12:20 AM

“Oh, I know mixing oil brands and viscosities is OK. Plenty of Frankenbrews on this forum. I was just wondering about extra fluids like oil treatments or "super concentrated extra moly" boosters that claim to help your engine. Can't imagine they'd be worth the price and effort. I miss the days of just using a great oil and not worrying if it has enough of this, that or anything else.”




Todays oils are better than ever. You really do not need to add anything.
Posted By: Puckrobber

Re: DOHC/Timing chain Mix? - 04/08/19 01:13 AM

Thanks, Pim! 😉
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