BREAKING: GM is officially recalling the L87

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GMCChevy

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They've said before thst thicker oil causes issues with the AFM lifters so I wonder if this change might cause shift to more issues with that.
While 20 weight is thin oil a lot of vehicles have been using it for 25 years or more without these major issues so it seems more like a bandaid on GMs part to try to prolong the real issue of defective parts or whatever is really going on.
 

Vladimir2306

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@jfoj well done, you called the shots on this oil viscosity stuff accurately. I believe @Vladimir2306 should also chime in and let us what he thinks as his mind was very well made up on 0W-20... I saw the discussion over on the other thread discussing engine oil fill capacity.

I can relate to some aspects of this goof up from GM, as I deal with ridiculous politics. I am sure the engineers that designed and qualified this engine knew what was best for reliability. I'm sure the 0W-20 recommendation was the by-product of some stupid inter-company politics where the org responsible for emissions / economy came up with this 'fleet recommendation' and strong armed the engine dept...... From personal experience, all it takes for a technology company to ship garbage is a few bad apples who have been promoted high up in the technical and managerial ladder.


@jfoj I'm still going to ask you to not worry too much about the oil fill level as I don't see any recommendations in the recall for a new dipstick. Getting it at the max line when parked level, and periodically topping off to that level is good enough for the life of the engine.... Factory fill level as you have observed is probably garbage as well. Who knows if that is correct when they goofed up on the oil viscosity.......
I'll tell you an interesting thing. This is a screenshot of a video from our Russian service, which dismantled four engines, a third-generation 6.2, a fifth-generation 5.3, a fourth-generation 6.2, and a fifth-generation 6.2. They are located from left to right. The left mileage is 150k kilometers, the second is the same, the third is very much, the fourth is L87, about 20 thousand km. The joke is that three left Bearing are made in the USA, and the right one is in Germany. But that's not all. In the l87 engines, the liners are mixed, American and German. The Germans die, the Americans do not break
 

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Vladimir2306

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Here is the photo of an American GM connecting rod bearing, and here is the German culprit
 

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Vladimir2306

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I believe that switching to 40 oil is not a solution, it is just an attempt to stretch the cars to the end of the warranty, by increasing the oil film. We still have new engines that are disassembled, sharpened, because they do not maintain temperature gaps
 

viven44

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I'll tell you an interesting thing. This is a screenshot of a video from our Russian service, which dismantled four engines, a third-generation 6.2, a fifth-generation 5.3, a fourth-generation 6.2, and a fifth-generation 6.2. They are located from left to right. The left mileage is 150k kilometers, the second is the same, the third is very much, the fourth is L87, about 20 thousand km. The joke is that three left Bearing are made in the USA, and the right one is in Germany. But that's not all. In the l87 engines, the liners are mixed, American and German. The Germans die, the Americans do not break

Thats very interesting. I wonder if the German ones are from the same factory that manufactures bearings for the BMW S65. ;)

When I found out that the BMW S65 requires bearing replacement every 60-80K miles I was shocked!! That takes us back to pre 1950s reliability expectations!
 

Vladimir2306

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Thats very interesting. I wonder if the German ones are from the same factory that manufactures bearings for the BMW S65. ;)

When I found out that the BMW S65 requires bearing replacement every 60-80K miles I was shocked!! That takes us back to pre 1950s reliability expectations!
I would not link BMW and GM, but everything is possible))
 

MSD9000

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I recently bought a 2019 yukon denali with the 6.2L and 65,000 miles. It's not in the NHTSA recall. What is different about this model than all the recalled ones?

Should I use different oil? I live in hot desert and i tow a travel trailer.
 

Vladimir2306

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I recently bought a 2019 yukon denali with the 6.2L and 65,000 miles. It's not in the NHTSA recall. What is different about this model than all the recalled ones?

Should I use different oil? I live in hot desert and i tow a travel trailer.
You have a different engine, you don't have to worry
 

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