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Hi,
Technically you are correct about those petroleum products lasting longer than people think but there is only one lubricant that really can stand the test of time and that's the differential oil.
The reason for this is it runs in a tighten closed up containment field of steel. There is small vent to allow for some air expansion but that's it. Unless the rear end get submerged in water or is subject things of that nature the oil change interval is very very long, if need be.
Engine oil on the other hand is exposed to several contaminations. Either by unburned hydrocarbons, deposits from the fuel that does burn, moisture from the air coming in to be burned and even a small amount of dirt that gets by any air filter.
Oil additives and engines have gotten a lot better long ago! The roads are all mostly paved for less dirt and mileages roll up very quickly on many of the cars today!
In the 50's you were lucky to get 75-100k out of any engines from any automakers.
There is another problem is that there's a stigma, still existing in the minds of many, who think every 3,000 Miles is an absolute must!
Our Volvo owners manuals go back to the mid eighties recommending 7,500 miles.
Now gasolines are a different animal altogether, because they are volatile!
It is a mixture of chemistry chains added in that makes it in a stage of unrest!
They are forced to be made into something that does not exist naturally.
Most oils and greases, that are actually oils, are a lot more stable as a comparison.
That is why I said, Yikes, when I read about 1 1/2 years age of it being left to open air in car tank.
Gasolines are very hard to contain, even if you sealed it up "air tight" in a vessel from the atmosphere!
I'm not aware of any study done on that and why should they? It's a burn, baby burn, mentality today!
Now comes the Batteries!
No matter what you do for them they are going to die. Just undoing the terminals is not an answer as they run themselves down from its own internal resistance of being in existence.
From the moment the potential voltage of the cells reach their maximum equilibrium it goes south. Like from hot to cold is a natural state of balance.
This is a chemistry thing again!
I have six Volvos and they are all 240's.
Never cared for the look of the Seven series. Too much like the GM's ... Buicks and Oldsmobiles, that old people drove back in my early days!
IMHO it was a bad move for Volvo! Sevens went away fast!
The Nine series was a clean up attempt of that and the 850 was their transitional model to "give in" to the FWD market of sales going that way, for the many reasons we know of now!
This electric car and no more combustion engines, is not a threat! It's survival to make a car with fewer parts for the same money but add on some profit for the presentation of luxury and "its different!"
The world is always ready because it's change that we want to wake up too and it's not a Groundhog Day of wash, rinse and repeat! (:/)
Phil
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