MOA 115

[HotAirWH1]

I recently had my 2024 Silverado Trail Boss with the 6.2L V8 engine recall (L87). The GM dealership had it in for a day and half to "diagnose" the engine to determine if had any internal damage and would need to be replaced. They determined that the engine passed inspection and changed oil from 0W-20 to a heavier 0W-40 synthetic oil. Along with the oil change they added 10 ounces of MOA 115 stating that hence, will be required for every oil change. I got to reading up on this product and seems that it is safe to use in older engines. I use Valvoline VR1 Racing Oil for oil changes in my low milage T-Type & was wondering if there are any added benefits to supplementing these oil changes with MOA. Anyone using MOA in their TR's ???

 

[THensley]

Valvoline dose not want you to add any thing to there already well blended oil .
And I don't know what happened to your truck, But mechanic in a can and 0-40 is not a fix. GM spent years perfecting the oil system to work with 0-20 that has way less drag and no were will you find MOA 115 in a owners manual or in GM service manual.
So that's 1 no from me any one want to second that? on both T-Type and truck

 

[Anthony P]

Hi Dan, Attached is a video from Dave's Auto Center in Centerville, UT. Published about a month ago. They got their hands on a never installed L87 engine that failed GM internal testing. Teardown and analysis yielded concerns that GM has not yet addressed this issue from a few model years ago - 2022 or maybe even 2021 models with L87?

I don't like the band-aid solution GM provided you. GM's got a problem with these L87 engines that seems like the cranks were never polished when viewing the Ra and Rz surface analysis data. Check out the giant sized chamfers on the oil holes. A lot different than what the Manley aftermarket crank shows.

From the vid's you can glean a good idea of what's happening in order to make future decisions as GM provides you with band-aids hoping to get through the warranty period before the engine fails.

and another teardown video of a recalled L87 that failed somewhere between 60K -90K miles per carfax report.

 

[Chuck Leeper]

The statement "Inspection" is what I'd call a "CYA" attempt at blowing smoke.
Short of pulling the engine, inspecting the crank. Just adding some "MOA" and 40 wt oil is exactly what Anthony has mentioned above.....
"From the vid's you can glean a good idea of what's happening in order to make future decisions as GM provides you with band-aids hoping to get through the warranty period before the engine fails."
Cut thru the and have Blackstone run an oil analysis. Then, when it STB, you can show the judge why you want your money back.
Oldtimers can recall that GM had that same shit in a can 50 yrs ago... It was known as EOS.
Here's a "GM required" tool for all stealership service depts.

 

[THensley]

Most attain has been your 6.2,But I think a street driven T-Type should not use race oil but that my opinion not fact. 10W30 VR1 won't need a additive.
Good quality oil, filter and frequent and yearly oil changes is all yourT-Type needs. And a trip to Blackstone won't hurt.

 

[BEATAV8]

The engines GM built in the 90's and early 2000's were much better than the stuff they build now.

That vane style oil pump is a piece of crap.

 

[Turbo6inKY]

All the change from 0w40 to 5w40 is, is to get engines that haven't failed yet through the warranty.

 

[Turbo6inKY]

The engines GM built in the 90's and early 2000's were much better than the stuff they build now.

That vane style oil pump is a piece of crap.

The pumps are working fine, it's the same basic principle as the pumps in our transmission. The root cause appears to be too much chamfer on the crank journals, causing a low pressure area, along with poor QC and machining debris being left inside various engine parts.

 

[BEATAV8]

The oil pump on my 5.3 failed catastrophically. Vanes shattered and took out the engine.

 

[Nigel]

Hi Dan, Attached is a video from Dave's Auto Center in Centerville, UT. Published about a month ago. They got their hands on a never installed L87 engine that failed GM internal testing. Teardown and analysis yielded concerns that GM has not yet addressed this issue from a few model years ago - 2022 or maybe even 2021 models with L87?

I don't like the band-aid solution GM provided you. GM's got a problem with these L87 engines that seems like the cranks were never polished when viewing the Ra and Rz surface analysis data. Check out the giant sized chamfers on the oil holes. A lot different than what the Manley aftermarket crank shows.

From the vid's you can glean a good idea of what's happening in order to make future decisions as GM provides you with band-aids hoping to get through the warranty period before the engine fails.

and another teardown video of a recalled L87 that failed somewhere between 60K -90K miles per carfax report.

I did not watch the second one yet, but watched the first one. They did a great job. This is what happens when banksters take over a company and molest the shit out of it until all drive and passion to make a good product has been eliminated from the work force. I am going to say with some degree of certainty (I don't think this is hard to deduce) that an operation was eliminated in order to make it cheaper with very little scrutiny of the risk that was introduced. Once it was cut loose, very little could be done to reverse course until disaster proved it was a stupid decision, and now the fuckstick banksters running the place see a red number on spreadsheet and wonder what happened instead of taking responsibility for not knowing how to run a company. I work for a large company that engineers shit. The engineers are narrowly focused and are really just pee-on cogs (of which I kinda fit that category where I work) who are pressured to cut cost. Most lack the desire or back bone to buck moronic ideas. (I am old and speak up, but it is difficult to make an impact) Many are swapped out for staff in low cost countries where all they do is turn the crank with indifference to the product or the company. I really can't characterize how awful it has become without writing a book Look at Boeing, murdered two plane loads of people with the 737max debacle, no accountability. The problem, they had one pile of shit CEO after another, all made in the mold of Jackass Welch. Fortunately here (hopefully) this screw up has not resulted in any deaths. Last thought, how can a major car company let shit like this out, making crank shaft journals correctly with the correct surface finish is about as basic as it gets for engine design and manufacturing.

 

[BEATAV8]

Nailed it!!!

 

[HotAirWH1]

My thought process on the MOA 115 is that its a detergent oil supplement and the VR1 doesn't have as much detergent or anti corrosion additives, but has high levels of zinc which our engines need. I have always used Quaker State Full Synthetic 5W-30 Motor Oil until I switched out the stock turbo to the
WORK TA-5857 this spring. Reed requested to use a high zinc oil with this turbo so I made the switch. I'll leave the MOA out.
I'm truly dissatisfied with "the fix" I received from GM. I see a new pickup in the near future. One without the L87 or until I can be confident that these engines have been re-engineered. A hundred million $$$ F**k up. Too bad, it's a nice truck