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

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TheAutumnWind

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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

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@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

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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.
 

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