2.7 Turbo 4 Fan Club

customboss · August 15

13 minutes ago, 15 Z71 said:

Well I pulled the trigger on a 2024 silverado crew cab 4x4. Went with the 2.7. Been driving it for 2 days and it actually runs better then my 2015 GMC with the 5.3. Really happy so far with truck.

You are gonna love that stout engine, quality of the truck increases exponentially by NOT having defective 6.2L V8.

My dealer is repairing rebuilding 4 6.2's monthly out here in Southern CO.

KARNUT · August 15

3 minutes ago, customboss said:

Scheduled appointment next Wednesday and while the truck was idling the MIL extinguished. Maybe this truck is demon possessed? @Grumpy Bear thoughts? LOL Maintenance Supervisor things the new pump is bad.

I am consistently getting 26-28 MPG @ 65 mph on HWY 160 here in CO. I love this stout 4 popper. Heck these things run in 2 cylinders most of the time cruising.

Oil usage update. I added 11 ounces of RLI BIOSYN 5w30 @ 2000 miles. MPG noticeably increased changing the oil back to 5w30 vs 10w30.

That’s the biggest problem I had with cylinder deactivation with my truck. It was rarely on. At the time I was able to switch back and forth with a programer. I saw very little benefit for the extra breakable components involved. In contrast my Odyssey at highway speeds is running most of the time in eco mode. It takes a good incline to switch off. Your fuel mileage is about equal to mine. The difference is I usually travel at 72 mph.

newdude · August 15

1 hour ago, customboss said:

Maintenance Supervisor things the new pump is bad.

At the rate they are trying to make the replacement pumps its a possibility.

Grumpy Bear · August 15

customboss · August 16

Rough on alignments up here. 15,242 miles , 8 months since new alignment and 4 new Firestone WinterForce LT 275/65R18 tires. 10 ply rating. Run em year round. 2022 LTD TRAILBOSS Custom 4WD. Rotating about every 7600 miles. Still have 14/32” remaining wearing evenly.

customboss · August 16

8 hours ago, Grumpy Bear said:

TY Grumpy

TheRiver · August 18

Still hard to believe there's not a fix/module/program to keep; what is turning out to be based on reviews and real world statements a stout, ample engine, out of 2 cylinder mode. It's got some quirks; but IMHO, many of those could be solved with locking out 2 cylinder mode, and revamping the PCV system.

Seems to me the folks that run these engines at "boost" are the ones seeing major oil consumption...........Engine break-in maybe???

I'm very intrigued about this engine................

Edited August 18 by TheRiver

fondupot · August 18

On 8/11/2024 at 11:36 PM, Grumpy Bear said:

How much? Since when? Thanks.

I started to notice it back when I started driving this truck around 34k miles. Burns anywhere from 3/4 quart in 5000 miles to 1.5 quarts in 5000 miles. I keep a quart in my truck at all times and check it periodically to keep it topped off. I just finished a 1500 mile road trip from SC to IL and back, and I checked the oil this morning and it was barely registering on the dipstick. It was in the middle of the dipstick before I started the trip. Added 1/2 quart and brought it back up to middle of dipstick.

No leaks anywhere I can see, Its just consuming somewhere.

Fuel mileage is fine tho I averaged 20mpg driving 75-77mph on this trip. Just gotta keep an eye on that oil level.

fondupot · August 18

*EDIT* DELETED DOUBLE POST

Edited August 18 by fondupot

customboss · August 19

23 hours ago, fondupot said:

I started to notice it back when I started driving this truck around 34k miles. Burns anywhere from 3/4 quart in 5000 miles to 1.5 quarts in 5000 miles. I keep a quart in my truck at all times and check it periodically to keep it topped off. I just finished a 1500 mile road trip from SC to IL and back, and I checked the oil this morning and it was barely registering on the dipstick. It was in the middle of the dipstick before I started the trip. Added 1/2 quart and brought it back up to middle of dipstick.

No leaks anywhere I can see, Its just consuming somewhere.

Fuel mileage is fine tho I averaged 20mpg driving 75-77mph on this trip. Just gotta keep an eye on that oil level.

Running RLI BIOSYNXTRA yet?

fondupot · August 20

15 hours ago, customboss said:

Running RLI BIOSYNXTRA yet?

Not yet. I got another 900 miles left on my current oil change.

silveradosid · August 20

fondupot do you have oil leaking out of the pipe from the turbo to the after cooler, i replaced the pcv fine oil separator on my truck 20 k ago and it stopped. just did an oil change on the weekend and i see it is leaking again.

customboss · August 20

2 hours ago, fondupot said:

Not yet. I got another 900 miles left on my current oil change.

Gotcha

fondupot · August 20

6 hours ago, silveradosid said:

fondupot do you have oil leaking out of the pipe from the turbo to the after cooler, i replaced the pcv fine oil separator on my truck 20 k ago and it stopped. just did an oil change on the weekend and i see it is leaking again.

Do you have a picture of the area you're talking about? I can't seem to understand what spot you are referring to.

But i have no oil leaking form the engine that I can tell. I park in the same spot on my driveway and there are no oil spots.

Edited August 20 by fondupot

customboss · August 20

5 hours ago, silveradosid said:

fondupot do you have oil leaking out of the pipe from the turbo to the after cooler, i replaced the pcv fine oil separator on my truck 20 k ago and it stopped. just did an oil change on the weekend and i see it is leaking again.

Show us a pic of the parts and area for sure. I use a qt in 7000 miles if I go that long but there’s no line wetting /moisture or oil film showing in intake, CCV stream, or at intercooler I can see on mine.