Oil change

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As insignificant as some claim (and it may in fact be minuscule) but there is a life expectancy with Mobil 1 synthetic oil. This past summer, all that attended the IMSA Corvette Corral at Canadian Tire Motorsport Park were treated to some very informative seminars. One of which was an engineer for Mobil 1. This specific question was asked and talked about in great detail. I realize he is in the business of selling oil, but I don't think he was just making stuff up. He went as far as to say, an open bottle of Mobil 1 synthetic oil has a shorter lifespan than a sealed one. Suffice it to say, noticeable gains or losses may not be realized during our ownership using these practices, but as far as car enthusiasts, Corvette owners are an anul bunch. When financial resources are not an issue, sometime "piece of mind" are reason enough.
Most Corvette owners (not me or Jack) store their cars 6 months of the year. The oil clock is almost 100% based on time. Oil life expectancy is based on "average consumer use in an average consumer environment" over a 1 year period. Oil producers also want to make money. Oil producers will also err on the extreme side of caution. So they likely base their idea of oil life on the "extreme consumer use in extreme conditions".
Of course an open bottle of oil has a shorter lifespan, but if I close it immediately after opening it that difference is negligible. How long can a bottle be open before the diffeence is noticeable? Certainly more than a year.
If anyone is really interested in real results and real testing. This is where to look. BobIsTheOilGuy (https://bobistheoilguy.com/forums/)
 
You're dad drove 500,000 a year?! I wouldn't believe any theories he presented to you lol...
Had to do with his job. Please do no digs on my dad , he was a great dad. Lousy husband but a great dad. He worked and fixed engines whether diesel or gas so he knew a lot. He also read a lot and was very educated besides schooling. So basically very intelligent.
 
"My dad used to drive 500,000 miles a year". Maybe you meant Kilometres. Was just expecting clarification, not Family History...
 
500,000 divided by 365=1,369 miles per day. I don't think that is possible...
He worked in the USA and went back and forth from his main office in Quebec back to Maine or other states. Maybe you are right. He used to change his pick up every 3 years and they had close to a million miles. I might have mistaken. 40 plus years ago.
 
Ok so now we are down to 300,000 MILES a year, 821 miles every day of the year. When did he have time to repair engines?
 
"In 1972, the provinces agreed to make all road signs metric by 1977. During the Labour Day weekend in 1977, every speed limit sign in the country was changed from mph to km/h. From the same time every new car sold had to have a speedometer that showed speed in km/h and distance in km."


I don't know if Quebec was on board with this, I think they were trying to Secede at the time. I don't know, I was young and it was a long time ago...
 
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Ok so now we are down to 300,000 MILES a year, 821 miles every day of the year. When did he have time to repair engines?
First and foremost the point was, don't change your oil because the booklet says so. 😁 I am 66 and I know he did a lot of traveling for the company. He would drive all over to get parts, buy desiel fuel for the drilling camps etc... So maybe my memory is off a bit. I distinctly remember him telling me about one of his F150 that it was at 1 million miles , before getting rid of it. He was a Ford man and was proud of the accomplishments. I know he didn't do that all his life.
 
What about having your Warranty/Extended Warranty denied because you didn't follow the Manufacture's Recommended Maintenance Requirements. That seems to be almost the entire Membership's concern on this Forum...
 
What about having your Warranty/Extended Warranty denied because you didn't follow the Manufacture's Recommended Maintenance Requirements. That seems to be almost the entire Membership's concern on this Forum...
They'd have to prove you didn't. Of course they could always "say" they have proof you didn't, but even an oil analysis can't prove how long the oil was in there as environment has a lot to do with oil quality. The difference in a year of the oil between different drivers could show a difference in contaminants etc. No 2 analysis' are never exactly alike.
 
So why is this even an issue then. GM says prove that you did it, and you say prove that I didn't. Go have a seat in the waiting room and wait them out....
 
So why is this even an issue then. GM says prove that you did it, and you say prove that I didn't. Go have a seat in the waiting room and wait them out....
It's not an issue for me. How could they even suspect a blown engine was because oil was in there for between 1 to 2 years? Impossible! They would have to lie because they didn't want to warranty it. Then they would do that always for every issue. Ain't gonna happen. A lot of worry for nutin.
 
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