So if you run such an engine on regular oil, you get some extended drain interval, but a test for nitriding will show when to change.
All the oil was tested…And it still had plenty of life left…All I was point out was that Leaving the oil in a gas running engine oil gets contaminated.
You are correct, sir, I did miss the “guarantee” part, but he was talking about the oil itself providing the guarantee, not the car manufacturer, which is where the debate focused.
I’m only a mere 48, so maybe I haven’t earned that same right just yet, but I don’t mind healthy debates at all…quite the contrary. I’ve been following this avidly, waiting for more concrete proof to come out, and thinking how your thoughts either echo my own, or contradict them. Once it descended into name calling and insults, though, it ceased being a healthy debate for me, and just a bunch of guys slinging mud.
I apprecaite the knowledge on this board. I really never paid attention to NPR, only heard the “Car Talk” show a couple times, but my S-I-L pointed me to this area, I found the board, and I’m hooked. I can only hope to help some folks along the way, and learn as much as possible from you guys.
Chase
I think the warranty question mountainbike mentioned is whether not changing your oil less often than the owner’s manual recommends will void your warranty.
Welcome.
I’ve no doubt you will, and already have, helped folks along the way. I believe that people sho reach out to help folks on the forum are people who were reaching out to help folks long before the internet was invented.
Admittedly, sometimes I have fun watching someone reaching out into the universe to try to pluck some secret thing out of the air to justify a losing argument. Occasionally I’ll “tweak” one. I’m not condoning it, but I don;t take myself as seriously as I used to when I was a young fella like yourself. I mean no offense.
Poor Mark. You simply can’t focus on the actual question can you? I’m sorry I can’t rattle off all the impressive terms about oil, but I’m sure if I did some basic research and used ‘copy/paste’ it would look every bit as impressive. You tell a good story but for all we know you pump gas for a living. Doesn’t matter.
I’ll keep it simple for you-
THE QUESTION-
Where do we buy this report? You don’t need to post a link, just give us the name of the company! Why are you so evasive about where to find this ‘$70 report’??? (The one from an independent lab that proves synthetic oil increases mileage. The one we all know doesn’t exist)
Stop using excuses, it appears we’re all sick of your bs. If you have proof, show it. If not, then as Whitey mentioned- stop wasting everyone’s time.
Regarding oil wearing out, I contacted someone who has a phd in chemical engineering, with a specific focus on petroleum products. He agreed that oil, at the molecular level, does NOT wear out. The additives get depleted, the oil gets contaminated, the viscosity modifiers wear out (the shear you refer to), etc. but the base oil itself does not wear out. Ever. And the Hastings rep I mentioned was not a sales rep. He was a factory ISO9000 QC rep. All he did was deal with filtration analysis.
And here’s a quote from an independent lab that I found, that was reporting on by-pass filtration tests-
“We have analyzed oils which have been in service 240,000 miles and found nothing unusual in the analysis, other than higher than average iron and lead (from steel parts and bearings), and these wear accumulations were not intolerably high.
After having run many tens of thousands of diesel engine oil samples, it is our opinion that a by-pass oil filtration system is one of the most important factors in extending oil life.”
(There was no mention of the earth being flat, however)
I changed over to synthetic oil in my '90 Nissan 300ZX twin turbo (approx 150,000 miles) a year or two ago, since I believed it was a superior lubricant, I didn’t mind the extra money, and I love the car and want it to last forever. Extending the oil change interval was not any part of my motivation. It had been leaking a little oil previously, but the leak accelerated markedly after the switch. Last summer I changed the rear main oil seal, which helped a lot, but it’s still leaking, possibly from the valve cover gaskets. It’s possible the timing of the increased leakage after changing to synthetic was a coincidence, but I’ve heard of at least one other individual who had the same experience after switching to synthetic in an older car. Something to consider. Anyone else here have a similar experience? Anyone know how these so-called “high-mileage” oils differ from regular oil, and how synthetic compares to both it and the conventional stuff?
Whatever Dude, but you have a point
I think you have earned the right, you kept my cars running.