Fact: I have a 1992 Ford explorer that I only change oil once every 6
months. I currently have 211,000 miles and the engine runs great and
it still doesn't eat oil. (Therefore, I don't put in any extra oil
until the oil change.) I have never had engine problems on this car
Strange: The unusual thing about my car is that I've had over $10,000
of repairs on this car. However it was never directly related to the
engine or my oil change intervals. There's has been so many repair on
my car. Even the door hinges were replaced because of wear and tear.
Opinion: It's a ripoff to change your oil every 3 months. My car is
proofs of it. I'm hoping that this engine makes it to 300,000. I
will keep you updated.
If you change the oil twice a year, that is 30 oil changes. 211,000 / 30
= about 7000. The recommendation is probably every 5000 or 7500 mi.
Plus, you probably use good quality oil.
I do agree with you. In general usage, there rarely is a need to change
the oil more than every 6 months or 7,500 mi. Personally, I do it every
6000 or so miles. I use Mobil 1 and a good-quality filter.
However, engines and conditions in which more frequent changes are needed.
So, in general, every 3 months or 3,000 mi is a waste of money, time and
However, I would like to remind you that the Explorer is a truck, not a car.
And, while this demonstrates that a vehicle can last a long time with
7500 mi oil change intervals (which is the recommendation for many
vehicles), it doesn't prove anything. In fact, some vehicles require
short change intervals, based on usage or design of engine and vehicle.
And, even if you truck goes 400,000 mi, that doesn't mean it would not
have gone 500,000 mi had you changed your oil more frequently.
I summarize this by saying the plural of anecdote is not data.
I change oil (Mobil One 5W30) every 10K miles (or once a year) on each
of my three vehicles, with just FILTER changes every 5K miles. Over 1/2
million total miles on the three vehicles and counting, with ZERO engine
problems, ever. Only a little makeup oil is added at the 5K mark, for
the filter loss.
Fact: It looks like you are changing your oil too often!
I'm due this week on the Taurus. 190K mi.
A slow 6 months - only 12K on the oil. Last two oil changes were at 18K
& 15K mi. - about 6 months each. No oil between, & oil still clean &
see-through at 10K.
Use Pure One or Motorcraft Filters, Mobil 1 oil, & you're good to go.
And there's no way I'll ever spend 10K on repairs, even if the tranny
goes or I wreck it. Rear disc brakes, eg., are only $56 including new
rotors. Even a steering rack is only ~$200. The biggest repair so far,
was the broken front spring(s), which was done with two front hubs & the
struts as long as it was all apart.
Did it ever occur to some of the bozos that have responded to this that
Mobil 1 is
a SYNTHETIC oil - vastly different than conventional mineral oil - and is
to have a much longer lifespan?
When synthetics first came out they were recommended to last 15,000 miles or
And many people ran them that long with no problems. Then the oil companies
discovered if they used the bugaboo of "you will void your car warranty
change on the recommended 6K intervals" they could sell more oil.
If your buying and treating synthetic oil with the same recommendations as
then your a blooming idiot. Synthetic is 3 times more expensive and if your
following the same change intervals as what is recommended for conventional
oil then your throwing away money.
And, not changing the filter during an oil change is idiotic. I can see
changing the filter
and just topping off the synthetic oil thats in the crankcase, but what
are people using that they reversed this? What blooming fool would change
out and leave the old filter in?
Using a mileage figure as a yardstick for all cars isn't right. A car with
worn rings and
valve seals might put so much contamination into the crankcase that not
3K intervals would just sludge the engine to death. A car with a spanking
might not even turn the oil black after 15,000 miles.
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