Three of the exhaust manifold bolts are broken off, it’s going to cause a leak eventually which could cause the O2 sensor to detect a lean condition.
The Denso O2 sensor I installed seems to be reading right so far, but I’ll keep that in mind and if it becomes a problem, I’ll use an OE.
as for that frame ground, I believe I already cleaned it up, but I’ll take another look, thanks.
The articles are there but most are skeptical as usual. Exact numbers, who knows. It does make the point and shows who’s really in charge. And gets the resolution quicker. You get the other side saying we’re in a quagmire and we’re losing. It doesn’t help resolve the conflict. In a world where everything is speculation and grandstanding. You have to play fire with fire. There’s no one better.
From what I gather, you have a 2.7 Diesel You cannot use Chevron gas in it. Howes has a diesel add-in and it states it cleans injectors. Me personally, wouldn't bother with it. If it's not broke, don't fix it.
Just my two cents worth.
Looking up on the web you can get the information that would seem obvious. You asked engine components to do more. You get more wear. The answer is they can last just as long but required more maintenance. Apparently having to change lifters, cam and associated components are maintenance or repairs. In some research the normal life span of valve train components are 80-100k miles with 3-5K miles oil change. So the next logical conclusion would be cost per mile. I use that analogy with my wife all the time with vehicles. My Odyssey is approaching 170K. The cost per mile will go up at 200K with maintenance. Looking at a low cost car. A K-4 with a 10-10 warranty. Selling my Ridgeline that’s about to hit the same maintenance milestone. My argument becomes not only I get worry free driving. But at no cost increases. Because I take the money from my Ridgeline and maintenance savings and other potential savings. I’m driving for free. So tying it with a bow. It makes you wonder. Is this a grand conspiracy by the auto makers? Raise the potential maintenance high enough. Buyers by extended warranty to 100K miles. Do the minimum maintenance required. Trade in at the warranty end. How long should they last? That question is what keeps people up at night. The answer is much more complicated than it used to be.
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