Blackstone sample on replacement engine after 13k miles

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DontTaseMeBro

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Antonm said:
The first number ( the “0” in 0w40) isn’t important unless you live in a cold climate. The second number (the “40” in the case of 0w40) is the oil weight once you’re actually driving. I live in south Texas, never really gets cold so I don’t care to much about that cold flow/ winter number.
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Indeed. I too don’t live in a very cold weather state. About the lowest it usually ever gets here during the winter is 20F. Once in a blue moon we’ll see single digits during the day. So I’ve never had a problem with 5W30/40 here. I’ll probably just drop in some Rotella T6 like I did in the past and call it a day.
 
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Rotella might have to more zinc and phosphorus in it than the catalytic can take. While great anti-wear additives they kinda destroy gasoline emissions equipment. Thats why most oils have lowered the ppm concentration of zinc & phosphorus and went with more molybdenum instead.
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I wonder where the high copper reading came from? Could be the builder honed the cam bearings to true up the alignment and exposed the metal? Probably no problem in this engine even in the long run.
 
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Antonm said:
Rotella might have to more zinc and phosphorus in it than the catalytic can take. While great anti-wear additives they kinda destroy gasoline emissions equipment. Thats why most oils have lowered the ppm concentration of zinc & phosphorus and went with more molybdenum instead.
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I’ve been running Liqui Moly in my W212 Mercedes so probably wouldn’t be a bad idea to run that in this engine too.
 
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DontTaseMeBro

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tom3 said:
I wonder where the high copper reading came from? Could be the builder honed the cam bearings to true up the alignment and exposed the metal? Probably no problem in this engine even in the long run.
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Doubt it. These are warranty replacement engines. Don’t they come long block from the factory?
 
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DontTaseMeBro said:
I’ve been running Liqui Moly in my W212 Mercedes so probably wouldn’t be a bad idea to run that in this engine too.
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Have you ever sent an oil sample in on the Mercedes?

We traded in a 2013 GL450 (an x166 with an m278 engine) on the Tahoe. We bought it new in late 2012 and it was well taken care of its whole life. A lot of Mercedes gas engines of the era are kinda known for piston slap which shows up as high aluminum in the oil analysis. Ours started climbing in aluminum around 175k miles for no apparent reason. Combined with the crap-tastic plastic Mercedes used in their cooling system we decided it was time for a new car and the Tahoe entered the chat.
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DontTaseMeBro

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Antonm said:
Have you ever sent an oil sample in on the Mercedes?

We traded in a 2013 GL450 (an x166 with an m278 engine) on the Tahoe. We bought it new in late 2012 and it was well taken care of its whole life. A lot of Mercedes gas engines of the era are kinda known for piston slap which shows up as high aluminum in the oil analysis. Ours started climbing in aluminum around 175k miles for no apparent reason. Combined with the crap-tastic plastic Mercedes used in their cooling system we decided it was time for a new car and the Tahoe entered the chat.
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I did last year. But mine has 68k miles currently on it. My W212 has the M157 engine in it. So far so good. Either way, I’m going to put it up for sale here soon.
 
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Been running Kirkland Synthetic 0W-20 with 7000+ mile changes on the 2020 6.2 with WIX extra capacity filters for the few years I've owned the vehicle and have excellent Blackstone reports and 116,000+ miles on this beast.
 
Antonm

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lol, looks like this thread beat YouTube to the punch on 0W40 oil shearing down to the 30 weight range.




Perhaps the 0W20 oils that are recommended for these engines don't shear down as much, but dang, starting out with a 20 weight, and it can only really ever go down,,,no thanks GM.
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