What did you do to your NBS GMT800 Tahoe/Yukon Today?

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

TheAutumnWind

Full Access Member
Joined
Jan 8, 2015
Posts
3,222
Reaction score
1,921
Had been debating a switch to Rotella and K&N filter vs my long time Mobil 1 setup (thanks to @swathdiver). When I found a bunch of Rotella Gas Truck on the clearance shelf at Menards a while back, I took it as a sign from the Lord and bought it all.

I had also decided to run a Kreen treatment this year and have had plugs and wires on the list/shelf for a bit, so... here's what I did:

Pulled a sample for Blackstone and changed out a few quarts of the Mobil 1 about 1000 miles ago. Added 8oz of Kreen with the new oil. Also, been filling up with 93 since then.

Saturday afternoon, I pulled the air filter, intake tube, plugs and wires. Based on the P/N, I think they're the originals. Not bad for 167k.

View attachment 278192


Then I used a tiny funnel and tube with a pipette to squirt 1oz. of Kreen into each cylinder. Installed the new plugs - Delco 41-110, turned it over a couple times with the key (no wires), and let her sit overnight.

Today I cleaned the Airaid filter and MAF while they were out, installed the new wires, and put everything back together. Then I added 8oz of Kreen to the 1/4ish tank of 93 and another 8oz to the oil (For those following along with your measuring cups, that makes 1 quart of Kreen total). Wires were VMS 10.2mm (I think @Doubeleive pointed them out a while back? They've been in the parts pile for about...nevermind). They seem nice. I do wish they were about 1" shorter in a couple spots. I thought I took pictures of them installed, but...:crazy:

View attachment 278193

Then I ran the truck for about an hour. A little white smoke from the tail pipe, but nothing youtube worthy. I could smell the Kreen a little, though.

Next, I proceeded to burn the skin off my hand for the sake of science by immediately acquiring another sample for Blackstone. I pulled and cleaned the catch can, and let her drain for a good long while. Documented milage, reset the oil monitor, installed K&N HP-1007, and fed her the Rotella 5w-30.

View attachment 278194

Last but not least, I took the long (Blackbear sport mode) route to grab an XL pepperoni pie. All seems good and running smooth. No noticeable difference in oil pressure. I think the lifters quieted down a touch, though.

Oh crap...I meant to rotate the tires...:disgust:
I am aware if kreen but what is the point of the "kreen treatment"?
 

kbuskill

***CAUTION*** I do my own stunts!
Joined
Mar 11, 2017
Posts
5,307
Reaction score
8,316
Location
NE. FL.
@kbuskill was the one, looks like.

Nice job... those are great wires but they are just a little long for our trucks. Keep an eye on the driver's side as when I first installed them the steering column would catch one and pull it loose from the plug and cause a misfire. I ended up using a zip tie to hold the wires away from the column.

When the headers went on I needed angled boots so I pulled those wires off and gave them to my brother for his Silvy.
 

HiHoeSilver

Away!
Joined
Feb 28, 2017
Posts
10,918
Reaction score
14,571
Location
Chicago
Nice job... those are great wires but they are just a little long for our trucks. Keep an eye on the driver's side as when I first installed them the steering column would catch one and pull it loose from the plug and cause a misfire. I ended up using a zip tie to hold the wires away from the column.

When the headers went on I needed angled boots so I pulled those wires off and gave them to my brother for his Silvy.

Yeah, that what I noticed, too. I think its the ISS clip that was likely snagging it. I need to do my annual shaft exercises anyways, so I will come up with a solution then. Also, the #8 gets awfully close to the sharp edge of the accumulator tray, I think. I thought I'd put some rubber edge guard on it just in case.
 

Forum statistics

Threads
132,311
Posts
1,865,747
Members
96,902
Latest member
ToddYYC
Top