Advice on Issues with 2019 Sierra
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Always satsified when the answer includes facts 👍 The physics and chemistry make sense. In the context of "high mileage" oils I think about old engines. An iron 4.3, for example. There are no oil jets cooling the back of the pistons, and VVT, what? LOL. The reality is plenty of modern engines are also "eligible" for high mileage oils. You may have noticed this too as time goes on, but 25 years ago can feel like 5 years ago sometimes. I wondered if I should put R&P in that old 4.3 of mine. No idea what it's used in the past couple of years but best I can tell, bulk oil from lube shops, based on the last documented services. It's not what I'd call a clean engine. What's the usual cleanup time for R&P? I'm guessing it depends on how bad the deposits are, but are we talking one oil change, two, three? -
By calgator73 · Posted
So after about 40k miles I'm down to 8/32" and getting noisier every day. What I've learned: 1. Keep your tires at 50/45 unless you're towing or hauling for best fuel economy and even tire wear. (mpg is 19@77 and 21 @ 75) 2. 0-60 goes from ~5.5 to ~7.0 3. Airing down on the beach is optional but still results in a much easier time. 4. Ride is still great up to about 70...then (as my son states) feels like riding on cobblestone streets. 5. Offroad traction...great. On-road in the wet...not so much. Now off to selecting another tire...maybe pirelli scorpion xtm at? -
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Exactly what it is. Remove the drive shaft, clean it with brake cleaner and put new grease back in it the yoke. Mine would make the noise shifting and even driving over bumps. https://youtu.be/L5-Dt2RdmbU?is=iYsoJ-0nWdrGgn2- -
Survey says yes based on the first engine to be released for the Gen 6 engines, the LS6 in the 2027 Corvette. LS6 has DFM. Lifter QC and construction has been improved (better/larger locking pin). Bottom end has dual oiling circuits instead of one like on the gen Vs. The internet (i.e. Facebook) sleuths saw that patent for a rocker arm cylinder deactivation on a pushrod engine and is running wild that all of the Gen 6s will have this when so far...none do. Service manual, parts catalog, etc. on the LS6, its got 16 active lifters and has DFM.
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