2011 GMC Sierra, 4.8 Penzoil Ultra Platinum 5-W 30, 7k on oil, 170k on engine.
- Thread starter Zathael
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Seems to not have attached, could you edit and paste.
I don't know how. I tried several times and nothing works. Not tech knowledgeable.
2011 GMC Sierra, 4.8 Penzoil Ultra Platinum 5-W 30, 7k on oil, 170k on engine.
First time sample. Would like to extend OCI to 10k. Any suggestions or comments are welcome. Thank you.
bobistheoilguy.com
I think I posted the oil results just now. Not sure. Not technology educated on these things.
Where you post messages there is an "Attach Files" button. You can use that to upload a file downloaded to your computer. Let me know
I did that and selected the file I wanted to attach, tried several times but it's not working. Thanks anyway.
If you'd like to send me a PM I could give you my email for me to upload it for you if you want.
Ok let me see if I can figure out how to PM you.
Someone help me out and I was able to post the results thank you.
With the help of someone else on this website, I managed to get the oil report posted. I drive mostly short trips with occasional long freeway trips.
With the help of someone on this website, I managed to get the oil report posted.
I’m not sure 10k is going to fly with this oil and your driving situation. The TBN isn’t bad but is getting down there. The wear items are looking good though.
What is the oil life monitor saying when you changed at 7k?
What is the oil life monitor saying when you changed at 7k?
Looks great, all wear metals look good for a 7k run and viscosity is in the grade. I run 40 grade oil in my 2003's 5.3, 2005's 6.0, and 2021 6.2 in my signature. But that engine doesn't seem to need any thicker oil, low wear metals, in the grade, and no consumption. You can use 0/5/15w-40 if you want but it's not needed. I just like the extra hths and additives.
I second @JavierH19 post. The viscosity isn't too high or too low for the grade & wear metals are below average so I'd follow their advice to 9k miles then retest. It's an excellent result.
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