Nice Ride

Heck, I have two Cummins powered trucks that are manual transmission (both are 4x4). I have to replace the clutch in those at about the same interval or less, which obviously requires the transmissions and transfer cases to come down, so I guess I'm not that opposed to removing transmissions every so often.

Maybe materials have gotten better, but having been a gearhead for decades and played with everything from motorcycle racing to farm tractors, I've never had good experience with oil wet belts in anything. I think it's the cheap way out, not the best way, and if they're willing to be cheap on something as important as the oil pump, what other engineering decisions did the accountants get to make?
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We have a 2018 Escalade ESV for the wife. A creampuff. We have rented several '21, 23 and recently a '24 suburbans. The new LT suburban rides nicer than her Cadillac ! The new platform is a huge winner in most categories. I would never own it without the Dmax. My dealer has a motor warranty for lifters, cam and even bottom end constantly. Told me its a nightmare. Love the truck but would only rent it or buy it in a Dmax. Nobody touches this platform for thr money and size.

Yes that is the Chevy version of My GMC Yukon Denali so essentially the same vehicle. I love mine. Its a really awesome rig. Super premium ride. Pulls my big ocean boat over the Oregon coast range like it is not even there.

Antonm said:

Heck, I have two Cummins powered trucks that are manual transmission (both are 4x4). I have to replace the clutch in those at about the same interval or less, which obviously requires the transmissions and transfer cases to come down, so I guess I'm not that opposed to removing transmissions every so often.

Maybe materials have gotten better, but having been a gearhead for decades and played with everything from motorcycle racing to farm tractors, I've never had good experience with oil wet belts in anything. I think it's the cheap way out, not the best way, and if they're willing to be cheap on something as important as the oil pump, what other engineering decisions did the accountants get to make?
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They have been using wet timing belts in cars for over 40 years. Its a NON issue. Not one 3.0 belt failure anywhere in the country or on any forum since 2018. A few engine failures with crazy heat- teardowns on YouTube.....yep oil belt totally intact not one issue. Yet everyone keeps saying they couldnt get over the wet oil belt with not one factual reason other than a feeling. I would venture to bet half of these people dont even know they have a timing belt in their wifes car.......

Seamus said:

They have been using wet timing belts in cars for over 40 years. Its a NON issue. Not one 3.0 belt failure anywhere in the country or on any forum since 2018. A few engine failures with crazy heat- teardowns on YouTube.....yep oil belt totally intact not one issue. Yet everyone keeps saying they couldnt get over the wet oil belt with not one factual reason other than a feeling. I would venture to bet half of these people dont even know they have a timing belt in their wifes car.......

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The VAST majority of timing belts are dry (not in contact with oil). And like I said earlier, I have had multiple personal experiences over the decades with oil wet belts in various applications, as a result, I will not buy an engine that uses one (just like I won't buy anything with a CVT transmission, just more trouble than they're worth). An oil wet belt has no advantage over a chain other than cost savings to the manufacturer.

PS. the 6.2 Tahoe is my wife's car (it uses a timing chain, although even it has some issues), my Cummins trucks use a direct driven gear to turn the cam, no service /replacement interval on those as the oil wet gears last pretty much forever (at least no one has worn a set of gears out yet and some of these engines have over a million miles on them).
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