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Ok,
You may have missed some of this, so I thought I would recap it only using documented facts with sources. This should, I pray, answer a lot of questions...

First, the manual says on page 154

SAE 5W-20 engine oil is recommended.
Only use oils "Certified For Gasoline Engines" by the
American Petroleum Institute (API)Use Motorcraft
or an equivalent oil meeting Ford Specification
WSS-M2C153-H SAE 5W-20 oil provides
optimum fuel economy and durability
performance meeting all requirements for your
vehicle's engine.

It does not say you have to use 5W-20 but it is recommended. I am sure that makes a lot of people feel better.

<HR>

Also
The current oil categories that are approved and licensed by API are ILSAC GF-2 and API SJ. For the last 3 years the industry has been developing an upgrade to these categories to be called ILSAC GF-3 and API SL. These new standards have significantly improved fuel economy and improved high temperature deposit performance. They have been delayed from the Jan 2000 initial proposed timing and may not be licensed until late 2001.

However, these proposed categories offer performance advantages that Ford and Honda chose to use in most of their 2001 model year cars.

So while the rest of the Auto industry waits for API to upgrade to the GF-3 SL service requirement Ford and Honda went ahead and required it earlier than the API did.

What does all this mean????
And here is my opnion part.....
Later next year, everything will be GF-3 and SL service and you can use the weight you want.

For now if you are using an oil that is API and claims to be GF-3 or WSS-M2C153-H compliant, I believe you are meeting Fords requirement.



_________________
Mid Life Crisis #388



<font size=-1>[ This Message was edited by: Mid Life Crisis #388 on 2001-12-06 23:34 ]</font>
 

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Mid Life,
Thank you for all the RESEARCHED information you have brought to the board regarding lubrication. I have learned alot from you and the links you have supplied for reading more on the subject.
On a side note it's somewhat anoying when someone full of hot air looking for an audiance shows up and takes up bandwidth with BS.

Thanks again,
Jim
:-B
:bullitt:
:-B



<font size=-1>[ This Message was edited by: DHG #1302 on 2001-12-07 08:48 ]</font>
 

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<TABLE BORDER=0 ALIGN=CENTER WIDTH=85%><TR><TD><font size=-1>Quote:</font><HR></TD></TR><TR><TD><FONT SIZE=-1><BLOCKQUOTE>
On 2001-12-07 09:03, kfengler wrote:
Midlife, good post!

I was talking to a coworker about 5w20 oils, and why Ford & Honda have recommended it.

One thing he brought up, that made sence to me, was that in todays, "high tech" engines, with multiple cams, valves etc, it's much more important to get the oil up to those areas, which is one reason for the 5 weigh...
Todays oils, name brand (maybe cheaper ones) are so much better than what we had 30 years ago. It's much more important, as far as I'm concerned, to keep the oil as clean as possible, and at a proper level!

</BLOCKQUOTE></FONT></TD></TR><TR><TD><HR></TD></TR></TABLE>

I AGREE!!
:bullitt:
 

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The bearing clearances are far tighter on the 4.6 engine than engines of the past. Be gentle with the accelerator until the engine is up to operating temperature if using a heavier weight of oil. Have seen several cam follower concerns related to thicker oil and high RPMs with engine below operating temperature. I cant see why a person couldnt use a heavier oil if operated in a normal manner. But, in extremely cold temperatures dont be surprised to see an oil filter blow the gasket or canister.
 

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Correct oil viscosity is a major concern on these engines, have seen many noises and mechanical concerns related to incorrect oil in the modular engines used by Ford. I will attempt to email you the bearing clearances and such from the Ford shop manuals.......4.6 vs the 5.0..........are far tighter on the 4.6
 

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I E-mailed Sean Hyland Motorsports concerning the the oil controversy and his spokesman said they use NOTHING BUT MOBIL 1 5W30. That is the ONLY OIL they will guarantee their engines with.
 
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