Best no BS motor oil/filter comparison?
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From: Mark A on 27 Nov 2008 13:12 "Scott Dorsey" <kludge(a)panix.com> wrote in message news:ggmgov$eje$1(a)panix2.panix.com... > The thing is, the cost argument is a very good argument. I change my oil > every 3,000 miles, which works out to a little bit more often than once a > month. This adds up to a substantial cost in the end. Most people don't change their oil every 3000 miles, but let's look at your situation. If you used synthetic oil and changed every 5000 miles, I would guarantee you that your oil would be in better shape at 5000 miles with synthetic than at 3000 miles with conventional. So in your case, you would at least break even.
From: Mark A on 27 Nov 2008 13:15 "SMS" <scharf.steven(a)geemail.com> wrote in message news:3OzXk.8376$Ei5.2239(a)flpi143.ffdc.sbc.com... > <snip> >An oil analysis is a good investment to determine the optimum oil change >interval. > <snip> Can you prove that? I would like to seem a financial analysis of your claim. Don't forget to figure in the cost of a person's time, which in my case is about $60 per hour.
From: Mark A on 27 Nov 2008 13:18 "SMS" <scharf.steven(a)geemail.com> wrote in message news:3PzXk.8377$Ei5.1841(a)flpi143.ffdc.sbc.com... > I see. So what you're saying is that you have nothing to support your > recommendation. I have plenty to support it, and have posted it in other posts and other threads (many times). But I am not going to spend thousands of dollars to get "proof" of something that only costs $30 per year and whose benefits are largely intuitive to anyone with any brains.
From: SMS on 27 Nov 2008 14:12 WindsorFox<[SS]> wrote: > SMS wrote: >> Mark A wrote: >>> "SMS" <scharf.steven(a)geemail.com> wrote in message >>> news:MEjXk.9759$ZP4.6925(a)nlpi067.nbdc.sbc.com... >>>> Where on earth did you get the idea that using conventional oil will >>>> require people to purchase new cars more often? >>> >>> Since you don't use synthetic oil, how would you know? >> >> That's why I'm asking where you got that idea into your head, since >> there's no evidence to support such a claim. Surely you haven't been >> listening to the Amsoil dealers! > > So the truth begins to emerge, your problem is not synthetic oil or > lack of documentation but Amsoil dealers and MLM type marketing. It's the independent Amsoil dealers that make the most incredible claims, especially in terms of increases in MPG. Mobil 1 makes some claims but at least they use enough weasel words that everyone knows that the claims have no validity. Think about how long synthetic oil has been available. Surely by now there would be some evidence of increased longevity or increased fuel economy, but there isn't. Mobil tried to popularize synthetic oil for passenger vehicles back in the early 1970's. At the time, Mobil was promoting 20K or 25K oil changes with synthetic, but they soon backed down from this. Synthetic oil is a good choice if you have a vehicle with a high performance engine (in fact synthetic is required for many of these engines). It is also a good choice if your vehicle is operated in extremely cold climates. It has higher resistance to breakdown caused by heat and it flows better in extreme cold. Unfortunately for the synthetic oil industry there is virtually no advantage to using synthetic oil in a non-high performance engine that is operated in moderate climates. You probably could go a bit longer between oil changes with a synthetic, i.e. following the normal service schedule even if you fall into the severe service category, but I wouldn't advise this. In short, synthetic may give you the peace of mind of knowing that you are using an oil that is far better than necessary for your vehicle, but it won't reduce wear or extend the life of the engine.
From: SMS on 27 Nov 2008 14:14
Mark A wrote: > "Scott Dorsey" <kludge(a)panix.com> wrote in message > news:ggmgov$eje$1(a)panix2.panix.com... >> The thing is, the cost argument is a very good argument. I change my oil >> every 3,000 miles, which works out to a little bit more often than once a >> month. This adds up to a substantial cost in the end. > > Most people don't change their oil every 3000 miles, but let's look at your > situation. > > If you used synthetic oil and changed every 5000 miles, I would guarantee > you that your oil would be in better shape at 5000 miles with synthetic than > at 3000 miles with conventional. On what basis would you guarantee such a thing? There is no benefit in changing conventional oil every 3000 miles versus every 5000 miles, and the same holds true for synthetics. If you're doing extended oil change intervals, beyond the manufacturer's requirements, then you might extend the drain interval to at least the severe service interval. |