I purchased this vehicle used in September of 2019. The truck had 26,000 miles on it. I noticed when checking the engine oil level that the oil level would be low in between oil changes. Often times as low as 2 or 3 quarts low. I have never had it be less than 2 quarts. Several times I have had the low oil level alert turn on while driving. I have had to regularly add a large amount of oil to the engine before it is due for the oil change.

I have also had one of the cylinders to start misfiring. It wasn't a periodic misfire but the cylinder was completely dead. I feared a valve issue but upon removing the spark plug for cylinder #4, I saw that it was completely sooted up with carbon deposits. The electrodes couldn't possibly spark due to the mass of carbon that had collected between them. I cleaned the carbon off, took some coarse sandpaper and polished the electrode surfaces, reinstalled the spark plug and that fixed the problem. About a year later the same cylinder started to misfire only when the engine was warm, but would fire when cold. I took the spark plug out and again it was covered with carbon deposits, although not as bad as the first time and the plug didn't appear to be fouled. Nonetheless, I replaced it with a new spark plug which did not fix that problem. Further checking revealed that the coil was bad for that cylinder. I purchased a new one and that fixed the problem.

The only reason I mention the coil failure is because the spark plug, despite not being fouled, did have a large amount of carbon deposited on the plug. Also, there are times where I will start the engine and upon starting a fairly large amount of smoke will blow out of the tailpipe. That only occurs at engine start maybe 3 or 4 times a year (that I notice anyway) and I never see it while driving. The oil consumption issue has not increased as the engine has aged fortunately, but I do worry that it will eventually become a much bigger problem, especially since I usually drive a vehicle until it is no longer viable to keep it running, usually well beyond 100,000 miles.

The truck has 78,000 miles on it now. I have owned nothing but Ford vehicles prior to this and have never had any oil consumption issues with those, even when they surpassed 100,000 miles. The exception to that is the small amount of oil that would be missing between oil changes due to a leaky valve cover that had developed. It was never enough of a issue to warrant changing the cover gasket, just about 1/2 quart of oil between changes and a slight smell of burnt oil when I would come to a stop. I would love to have this problem fixed or at least mitigated somewhat. If it wouldn't lead to bigger problems down the line I would just pour more oil in and not worry about it. I'm afraid that despite keeping the oil level normal by adding oil, the problem will get much worse in the not too distant future.

Bought a new Chevy Siverado in July 2016 that listed for over $48,000. I have had a few problems with Android Auto but truck is running good. Noticed it seemed to use oil before first oil change. Talked to dealer and said it was new so maybe wasn't filled up right or break in. Next noticed using oil at second change so dealer said they would check to confirm. They checked at about 15000 miles about 1,800 miles after oil change. Dealer said it was down almost a quart. They said GM won't do anything unless use is over a quart in 2,000 miles. They topped it off and said they would check again in 2,000 miles.

It is terrible quality that a new almost $50,000 vehicle uses a quart in 2,000 miles and the manufacturer says that is OK. I have not even towed anything on the vehicle so what is this going to be like in the future. Someone has to set standards for oil usage and GM needs to stand behind their products and quality.

We are stuck when we buy a new vehicle with a warranty when the dealer and manufacturer doesn't want to fix the problems. Even if they try usually they make the problem worse or cause another so what is a customer to do?

Low oil warning light came on Saturday 9/23/17 while driving, quick looked at pressure gauge and it was still sitting around 40psi. Had oil changed around 3000 miles before, still had 42% oil life remaining, and figured it was a bad sensor. Drove around on Sunday 9/24/17, no problems. On Monday, during a 30 minute drive, low oil light came back on, again, no dip in the pressure gauge. Got the truck home that evening, let it sit, and checked the oil Tuesday morning. Oil was registering only at the very bottom of the dipstick. Went and got a quart of oil and added it in. Checked it again, and it was at the very bottom of the etched out. No visible leaks, so I checked my receipt from previous oil change figuring that maybe dealership didn't put in enough oil, but the full 8qts were on there. Called dealer and dropped off on Wednesday 9/27/17. Dealer called Thursday 9/28/17 afternoon and asked if i had added oil at any point, told them just 1 quart. Apparently when they drained it, I was 3.5 quarts low, and I'm assuming 4.5 quarts low before I added the quart. Was told that there was a TSB for Oil Consumption, but they had not seen it on the 2016 5.3 V8 and sometimes the Piston Rings don't seat right, They changed the oil, and I have to bring back in 1000 miles.