Homer1959

From the owner manual Sierra hd 2025 6.6 gas how to check engine oil level : To get an accurate reading, park the vehicle on level ground. Check the engine oil level after the engine has been off for at least two hours. Checking the engine oil level on steep grades or too soon after engine shutoff can result in incorrect readings. Accuracy improves when checking a cold engine prior to starting. Remove the dipstick and check the level. So, according to you, Riddler, with the engine cold we should aim for the low mark on the dipstick, and the high mark when the engine is at operating temperature? So you’re saying the engine oil expands by a quart... humm... I guess that's something GM dont know

Is this the new replacement for the valvoline restore and protect, & do not miss the rinsing at the end https://x.com/Jacquesjazz45/status/2060829208855638312?s=20

everything is politics ...

Thanks !!

Quick question: do you need a special tool or scanner to replace the front or rear pad, since the 2025 model has some kind of wear detector? Obviously Its not that I need to do the job now but Im curious to know

You are better than me, I know that the perfect truck doesn't exist but if GM sells me a POS like you said I would not encourage them by buying a even more expensive one but hey to each is own good luck man we work hard enough to get much better than a POS

At least in the USA, there’s some competition between neighborhoods, even between street corners. Back home in Quebec, it’s basically the same price across the same areas, and when consumer protection steps in, they always claim there’s no collusion. All stations within miles seem to adjust their prices around the same time, whether they’re national brands or independents. Occasionally, you’ll find one that tries to raise or lower prices faster, but that’s rare. Most of the time, Costco is the cheaper option.

7 years or 60k is my goal. We use it solely to pull our TT from quebec to texas for the annual snowbird trip. At that time ill be 73 so ill be done with camping. Ill follow the OCI and do minimum maintenance on it, no need to invest more than i have to do in this truck

What’s the Holy Graal for my new 2025 Sierra 2500 HD gas model then—something I can easily grab off the shelf at a big store, not from some obscure boutique? Maybe Amsoil? Or should I just use what I already have and hope for the best? I’ve got four 5-liter jugs of QS 5W-40 Euro ready to go in, and I’m not worried about the warranty since I can provide all the receipts needed to prove I’ve used Dexos-approved oil

Referring to my post, I should mention that I really condensed the discussion I had with the SOPUS rep. In short, he didn’t say that base oil isn’t important, only that it’s far from being the sole factor in making a good product. Personally, I understood that a good HC or GNL base oil is more than sufficient as long as the additive package is a solid one. Like with anything, it's the sum of components in a product that makes it good, good enough, or very good. Can you find an oil with an excellent base oil, even a Group IV, but with a weak add pack? I’m not sure, but I think if we look hard enough, we might come across a Group III that performs better thanks to a stronger add pack. I may be wrong , that happened before

Any reason to not using valvoline clean and protect all the time ?

A long time ago, a tribologist IIRC at Sopus told me to stop focusing mainly on the base oil and to pay more attention to the additive package—that’s where the real substance is. Regarding base oil I beleive I can say that Oil company are like politicians,They are not there to primarily serve your interests.

I wonder how the EPA concluded that burning 1 quart of oil per 1,000 miles—so about 5 quarts over a typical oil change interval—creates less pollution than the fuel savings from their specifications and restrictions. I’m no engineer, but 5 quarts of oil burned and released into the atmosphere by 500,000 trucks doesn’t seem much better than a small increase in fuel consumption.

One thing missing from the oil geek’s video is an explanation of how the Rotella T6 can also be classified as SN—how can it be both?

reg 3.17 to 3.39 Mission TX . its going to be expensive returning home in a couple of week a 2500 miles ride