I apologize if this subject was discussed here before. But my
ISP does not keep messages for too long.
I just picked up my new Explorer. I checked the oil
requirements and it says 5W20. It's first time I've seen such
light oil in the car. On the next oil change I want to put
synthetic in. What viscosity should I use?
The reason is that I lease this car and I put only about 6000
miles a year, so I just want to reduce the number of oil changes
without killing the engine. Basically I want to change the oil
once and forget about it till the lease is over.
My commute is 1.2 miles to the train station. Weekends may be
50 miles or so. Some long trips to other states on occasion.
And pulling the boat (4500 lb) on the trips of 300 miles couple
times a year. And I don't care about the next owner. However I
would like to keep the engine in good condition. Do I need
synthetic at all?
If that 50 miles is pretty much weekly and continuous without the car cooling
down much, I'd say you could go with Mobil 1 and do 7500 miles..
Heck, just use dino and change the oil just before the boating trip
You should change the oil in your vehicle at a quarterly interval every
3K to 5K miles. Changing the oil in your vehicle at a quarterly interval
will help keep the enigine at its best shape and running "clean" no matter
how many miles you put on your vehicle per year. Mobil 1 or Texaco/Havoline
are one of the best motor oil out there. I'd go with Mobil 1 as well.
The quarterly interval is bull. When the truck is just sitting there, the
oil is not breaking down at any appreciable rate.
Do you have any evidence that there really is good reason to change the oil?
As far as I can tell, there is absolutely no need to change the oil every 3
months if you put less than 3000 mi. on it.
Actually you should change every three to four months. There is plenty of proof
out there. Do a google search. I was surprised my self when a couple of years
ago Car and Driver did a review of different oils and how they break down over
time. It is not the sitting there that breaks them down but little use is almost
as bad as a lot of use, and hard use you should change it more often.
Jeff Utz wrote:
It's my 3-rd lease. They don't care how often you change oil.
They simply auction the car at the lease end and nobody owes
anyone anything. There is no need to present any maintanance
records. But anyway, I would like to keep the engine in good
condition, despite that I am only going to use it for 3 years.
Changing oil is not a big deal. Takes only few minutes. I just
thought that I can use synthetic, as they say it's good for
25,000 miles. Is this a BS claim?
Who makes the claim? Who's they?
According to Mobil1 (http://www.mobil1.com/index.jsp --> Why Synthetics ->
Myths), you should still change your oil as often as you would with regular
oil, although you can go for the longest distance (e.g., the distance for
normal use as opposed to the distance for the severe use). I think I would
go like 5,000 mi. between oil changes with Mobil1 with your hard miles, but
I would not go any longer. You will get a lot of different opinions.
However, Amsol says 25,000 mi.
And they aren't the only ones:
In your case, I would change it at 12,500 intervals.
I think there are a lot of mechanics who really believe you have to change
oil at 3k mi. I don't agree with them (although I do agree changing your oil
often enough and using good, quality oil is very important). Of course, what
often enough means is the question.
Personally, I use synthetic and change it every 5 k mi or so.
Virtually every new car here in South Africa has oil change intervals of
either 15000km (9375mi) or 20000km (12500mi) minimum, and I think one or
two makes may even have 30000km (18750mi) intervals (possibly on
I'm unusual in that I like to change my oil every 7500km (4700mi).
"Ambition is a poor excuse for not having enough
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