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I know the claim was that they overfill the LZ0 or unless it was the first series of 3.0 duramax an additional quart due to more oil use before the rings/cylinder mates together. My neighbors is a refresh 2022 model and who knows what changes they could have made between then and now and no two engines are exactly alike and it would probably have some bearing on how the engine was broken in and serviced as well. I'd be doing exactly like you are, a few short interval oil changes ( not sure if you cut open the filters, you might not want to know what was inside of them ! ) and shorter intervals over all for oil changes and you've more than done your part. If it piles up, that's completely on GM and its there baby to cover the cost of a new engine. By the way the neighbor said he just had that coolant diverter contraption replaced on is truck, don't recall the miles that is on his truck now but certainly within the warranty period yet and so was all covered as he said there was a time when they were not covering that under the power train warranty but now they are as I believe he would be over the bumper to bumper warranty in distance I believe and certainly past in the three year time frame. -
Being they have access to hundreds of trucks and equipment like I do. Their input would seem worthy. Not everyone lives in a small little world. Like it appears you do. -
I've got just under 3k on my LZ0 and it's hard to tell what it's doing because I changed the oil at 500, 1500, and getting ready to do it again. The next interval will span 2k miles before probably going to a max of 3500 -- but using the recommended 0w20. Some superstition, and some data, I don't want to do longer intervals for the real or perceived possibility of the oil losing viscosity with longer use, starting from only 20 weight oil. I use Mobil 1 ESPx2. In the last 1500 miles most of it has been higher speed, highway driving 70mph+, and only a little towing. I topped off the oil at about 2750 miles, adding about 1/8 quart to put the level back on full. IMO, nothing to worry about. There's still a possibility a defective thrust bearing could take out the whole engine before 10k or so. That's a lovely thought to ponder, but if it happens, I'll get the engine replaced and send the truck down the road and find something else. -
This might be the beginning of the end. My chips are on 6 months until prices are within reason of pre-war levels, maybe 8-10 because stockpiles need to be replenished for national security. Sad that we're two steps backwards from where we started.
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By Pro Street Jim · Posted
Much appreciated. I will look into that. Jim
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