My guess is that this has been hammered around a bit in the past. I have a new
Lincoln LS, and my wife has a 3 month old Escape Limited. Both use 5W20 oil as
I guess do most new Ford products. Synthetic appears to be recommended. Now
1. Why 5W20???
2. Do they come from the factory with synthetic oil?
3. Is synthetic worth the extra cost?
4. What is the best recommendation for oil choice in synthetic?
thanks in advance.
This is cut&pasted from an email I sent to a friend with a new
F150. I have a 2000 Focus. My interpretation of the 5W-20
recommendation is that Ford wanted to use 5W-20 for the EPA
fuel economy test, but the EPA wouldn't let them unless they
recommended it for most of their product line. I think it is
very interesting (per what I have read in the Focus newsgroup)
that Ford does _not_ recommend 5W-20 in Europe for Focuses with
the same engine as sold in the US.
I believe the Motorcraft 5W-20 is a semi-synth oil.
Talks about the 5W-20 recommendation.
Letter from EPA to Ford detailing hurdles Ford has to get over in order
to be allowed to recommend 5W-20 as a CAFE improver.
More background on Ford's justification for 5W-20.
One statement from Ford that I found interesting:
"We're confident oils meeting our specification will provide at least
150,000 miles of durability protection."
I'd be pretty unhappy (but not as unhappy as you) if your 2004 F150 5.4l
V8 only lasted 150,000 miles...
At least Ford's 5W-20 spec is better than the generic GF-3 spec, in that
it requires 128 hours of the Sequence IIIE test rather than 64 hours.
Bottom line: I am not going to use it and I would recommend that you
do not use it (after the warranty runs out). Actually I wouldn't even
use it during the warranty- I think Ford would have to prove that using
5W-30 or heavier contributed to any engine damage.
You know, come to think of it, my car never made the knocking sound before
I had the oil changed at the Ford dealership in Glenwood Springs, CO.
Of course they used 5W-20. I had been using Mobil 1 5W-30 up to that
Better fuel economy. Think about it: Better fuel economy means less
friction. Less friction means less wear and tear.
Depends on how long you are going to own the car. If you are going to keep
the car for say 50,000 mi, I would use dino oil and change it according to
If you want to keep the car for say 250,000 mi, I would use Mobil 1
synthetic and change the oil every 7,5000 or 10,000 mi. The engine should
last longer with Mobil 1, but if you are going to keep the car only 50,000
mi, what difference does it make to you as long as it is going strong when
you sell the car?
Mobil 1 is very good. I don't know if it is the best.
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