Comments by "JackTannehillPromoter" (@njsongwriter) on "The Car Care Nut"
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I'm 74 (today) and I've only bought an extended warranty twice in my life. Both were from a dealer and were for used cars. The first was on a VW Vanagon. The warranty proved to be a good deal cause it ended up needing CV joints and major engine work that would have cost a lot more than the warranty. The last extended warranty is on our present vehicle. We hopefully will never need to use it. The vehicle was ten years old when we bought it but it had only 18,646 miles on it (in March 2019). We now have 53,750 miles on it and nothing except normal oil changes, tires and regular service. I have done three drain and fills of the ATF and had an after market ATF cooler installed cause it runs hot in the summer. It will need front brakes soon. There is less than 16,000 miles left on that 48,000 mile warranty. Yes, I view it as insurance not a waste... It's a 2009 RAV4 FWD with 2.5 liter 4 cylinder. We are currently averaging 29 mpg using ethanol-free fuel almost exclusively. I personally change the full synthetic oil every 5,000 miles. We paid the dealer $1400 for the four year, 48,000 mile warranty. That was my only mistake, not getting them to lower the price.
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@papadean.
Yes, but an oil analysis will likely indicate that the oil is still good at 10,000 miles with modern oils and with many if not most drivers and vehicles. AMD's point is that regardless of the analysis it isn't as good as it would be with a reduced oil change interval of 5,000 miles. If you change it every 10,000 miles will it still be in good operating condition at 300,000 miles? Maybe, or maybe not like the example in this video, but if you change the oil every 5,000 miles the chances of it (your engine) still being in great shape at 300,000 miles is much much greater. That's what this is all about. It's a small price to pay. Oil is cheap compared to engines. So by doing an additional 15 oil changes you are much more likely to avoid the cost of an engine rebuild at 150,000 miles. Is it worth it? Is it worth it to you? You do the math. It may depend on whether or not you do your own oil changes and on how long you even plan on keeping the vehicle.
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I agree that there is no science that backs up the idea that using premium fuel will increase fuel economy, however there is evidence that ethanol-free fuel is more efficient than fuel containing ethanol. Probably not more efficient so as to save you money because ethanol-free fuel usually cost more and is often only available in the premium grade. Running ethanol-free will give you 3% to 4% better fuel efficiency but it will only save you money if you can find it in the regular 87 octane grade if that's what your vehicle calls for and then it would also need to be priced the same. Still, some of us follow the logic that says, if it's more efficient then it must be better for the engine. Maybe, maybe not? Personal decision. Some of us eat organic food. Others don't think it makes a difference.
Ethanol contains roughly one third less energy than ethanol-free (also known as non-ethanol) gasoline does, which means you will get slightly fewer miles per gallon if you use E10 or E15. The fewer miles per gallon you get is small, but measurable.
Due to the absence of ethanol in this fuel type, it offers a couple of advantages, including; improved gas mileage, reduced engine damage risk, and a shelf life of up to 6 months.
Ethanol-free gas is also better for the engine. There have been reports of engine parts rotting as a result of ethanol-mixed gas. By its very nature is that ethanol attracts water and might be harmful. Customers can choose between ethanol-containing gas and ethanol-free gas at various gas stations all around the United States.
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Let's see 120,000 x.95 = 114,000 miles highway miles. That 114,000 highway miles would be equivalent to 11,400 city miles from a wear standpoint. 11,000+ 6,000 non highway miles = 17,000 miles equivalent if it was all non highway miles. Looking at it from that standpoint ... If I was driving 17,000 city miles with no highway miles I'd probably want to change it every 3,000 miles. So it seems to me that changing it every 2 months would be more than enough. In your case that would be every 20,000 miles. But changing it once a month in your case would be every 10,000 miles. At every 8,000 miles you're looking at every three weeks. Seems like overkill to me.
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