Question for those more TSB knowledgeable here...
I've looked through the doc. links, and maybe I missed something, but it seems the 5W20 is not the recommended oil for the 4.0L SOHC V6 (2005 Explorer). Everything appears to still indicate 5W30.

After my recent oil change (last week),
Called the Ford Dealer, and questioned the useage of 5W20 in the 4.0L SOHC V6.
First the Service person said, they always use 5W20 now, for all.
I then questioned if that was their policy, or Ford's. She went to speak to the Service Manager who indicated, it was per Ford Motor Co.

FYI, received a reply email from Ford MC. They cannot answer technical questions directly, and indicated that the Dealer is the knowledgable party, and if on the "rare" occasion that the dealer cannot answer a question, that the Dealer has direct access to Ford resources.

(had this entered above in the Explorer section)

 

i don't think the 4.0 was ever approved to run the 5w20.

 

Never had any problem with my local dealer.
Though I have no spec or doc. to verify it, the Ford dealer did say this was per Ford Motor Co. This is my second oil change there with 5W20.
I questioned Dealer Service face-to -face, and via phone, but Ford itself will not comment. From the Dealer's comment, apparently all Explorers are being serviced there with 5W20, regardless of engine.

 

You seem to be right:
http://img.photobucket.com/albums/v7...-oil-chart.jpg

 

I have that chart, and since it ended at 2004, I was searching for a perhaps "unknown" 2005 TSB....
Guess I'll go back to doing my own oil changes!

 

I have a 03 150 Supercrew w/ 30k miles on it. At every oil change it is about one quart low. I don't see any oil on the ground or lying around the motor. A diesel mechanic told me the 5w 20 was too thin and to use 10w 30. I take it this is wrong advice by reading the posts in this forum. And the truck is still about a quart low each time. Any suggestions? Thanks!

 

All engines will use some oil. Generally, a quart at every oil change (5000 miles?) would be considered good, or at least very acceptable, results.

I would stay with the 5W20. I certainly would never go to 10W30 unless you are located in a very hot climate, and then only if you were using over a quart /1000 miles. If for some reason you feel you have to change, go to 5W30.

 

Who did the testing, and where can we see it. Wife's got an Escape I just put Mobil 1 5W20 in it, and now I'm concerned to the point of worried.

 

flash posted it a while back i would pm him and ask about it. you would end up with better protection from the mc oil which is half the price.

 

I thought everybody had access to the Mobil data sheets. Maybe not. Here is the data for the NEW 5w-20. The old 0w-20 had a HT/HS rating at 2.60. To achieve average wear at the bearings and the valve train HT/HS rating of 2.8 is considered essential for normal wear. I can only assume that the new 5w-20 has a little more SS to keep it from falling apart under load. If you have been using it and have had good results- stay with it. Mobil builds decent oils. If you review my posts, I'm sure everybody is aware that I am not a proponent of synthetics. Most folks don't even have a clue as to the type of synthetic they have and if it really out performs a dino. No PAO basestock oil will add one mile to the longeviety of your engine under normal conditions. The advantages are cold startup flow properties. They will also out distance a dino in extreme heat BUT, you knew there had to be one, by the time the synthetic oil would be of benefit, the aluminum parts of the engine are toast anyway. PAOs do not possess more lubricity than a dino and don't believe the advertizing hype that it makes your engine last longer. If you like it, don't mind spending the money on it, and it gives you a warm fuzzy, keep using it. It certainly won't hurt anything.
http://www.mobil.com/USA-English/Lub...il_1_5W-20.asp

Hope this is what you are looking for.

The bare bones minimum HT/HS rating to meet Fords spec is 2.60. Because of the low allowable deposits. etc., the blends in this viscosity range are extremely stable and in some cases, more stable than a "full" synthetic.

 

The the good thing about 0W20 or 5W20 oils is that best HTHS rating you will probably find will be 2.6 to 2.7.

The the bad thing about 0W20 or 5W20 oils is that best HTHS rating you will probably find will be 2.6 to 2.7.

You can read technical data sheet after technical data sheet, and there just isn't much variation between the commonly available brands, 0W or 5W, or syn/synbld/dino variation when it comes to HTHS and Xw20 weight.

 

Not so 2fords2. Most of the 930 oils will hit 2.8 or better. Havoline is at 2.85 along with Motorcraft. Redline hits 3.3. Pennzoil, Quaker State and others will be at the 2.8. Ht/HS is not the only criteria to judge an oil. We once looked at the Flash point to judge an oil and it is pretty much irrelevant these days as some of the binders will flash in test long before the oil itself. My thinking is that there will be an adjustment in concept of HT/HS rating in the near future.

 

You are right, HTHS is only one reference point by which to judge. But with regard to the HTHS numbers themselves, I don't understand. With the exception of Redline at 3.3, none of the manufacturers of those oils you listed report their 5W20 oil HTHS at 2.8 today. Pennzoil and Quaker State current Technical Data Sheets on their web sites show 2.6. Havoline doesn't report it, and I haven't seen anything newer than API SJ data on Motorcraft oil in years. And that SJ stuff was only 2.65. My quick check of Mobil 1, Schaeffer, Amsoil, Conoco, and PZ/QS new synthetics all show 2.6 to 2.7. Valvoline, Castrol and Mobil don't disclose HTHS in their data sheets. What am I missing?

 

Flash, have you finished your study of Mobile 7500 blend? I thought you posted that you were looking into that oil. If the blends are better for most people than the pure syn. I am happy to save some$.
Thanks Dan

 

yes i am wating for those results.