MAC[H]Z,

800,000 miles

You aren't pulling our leg are you?

As for your corn oil comment, I find that to be totally offensive. I would never run corn oil in anything I have. I much prefer peanut oil.

Oh, if you are not interested in this thread, just unmark the box that notifies you of a reply and ignore any posts that follow. It will keep you from wasting your time on this thread.

 

I had the dealer check with Ford when experiencing piston slap on my previous truck (5.4) and although they would not provide in writing, the response from them to the dealer was full synthetic 10W-30 was OK. I had wondered about the Ford 5W-30 , as it appeared to look a dirty brown color right out of the can.

 

I am sorry for keeping this thing going!

I couldn't resist however the post about Ford not going back in time and changing clearance on old engines so that must mean it is for cafe only.

Come on now do you really believe that?? Don't you think there is a slight possability that ford tested this new weight oil in some old engines and found that they ran better and had less oil concerns?

Besides calling for 5w-20 in an old engine does nothing for ford's current cafe rating. the cafe rating is for current and future produced vehicles!

It always amazes me how people do NOT embrace change. Lets all go back to short life expectancy, no internet, leaded gas, straight weight oil, leather strap shocks, (model T), no seatbelts, etc etc...

in 10 years you guys will fight 0w-00 weight oil and jet powered trucks! I can hear it now...I drove a reciprocating engine for years with -0w-10 oil and never had any problems why does ford want to put some water powered jet engine that uses 0w-00 oil? I just might have to buy that dodge with a olive oil powered rotary engine!

the thread lives on!

 

Here is my whole take on this situation. The difference between 5w-20 and 5w30 is so miniscule, and I think a reason they now recomend the 5w-20 is for efficiency, lighter, thinner oil, less drag (not much) But the reason is many of the new motors these companies are putting out are using parts that have less friction, for instance, my dad's new Benz CLK 430 or my friends BMW 330Ci, I didnt believe this at first but the first recomended oil change is 15,000 miles !!!! Second oil change........ you guessed it, 30,000 miles !!!! I have a friend that is a tech for BMW and he says the parts they use, advanced designs in bearings and synthetic oil (they recomend Castrol Syntec) Also, teflon is used in many of the reciprocating parts, a lot less friction in these motors these days, therefore, lighter oil, better economy, longer life, its a beautiful thing

 

I appreciate the condescending tone of your post but, frankly the substance doesn't cut it. Most of the inhabitants of this board do embrace change and can show you the truck mod invoices to prove it. Also, like many others on this board I personally am quite fastidious about maintenance and use one of the most expensive synthetic oils you can buy. The point is, is that Ford has never stated nor even implied that their engines, old or new, run better with 5W-20. They have mention CAFE time and again. Some people just simply don't jump every time they are told to follow the herd. The argument you are making is based on "what ifs" and not fact. Neither Ford nor you has made any effective argument as to why anyone should switch away from higher quality oils like Redline or Amsoil or Mobil 1 5W-30 to some group 2/3 semi-synthetic excuse for a motor oil. Show us the improved wear metals on an oil analysis if you want to make your point. P.S. Don't bother because it has never happened.

 

I once predicted, earlier this year, that Mobil 1 would come out with a 5W-20 oil. I think I said by this past summer. I guess I was wrong on both predictions. Last week, we learned that Mobil 1 will now be available in a 0W-20 synthetic.

I wonder what the nay-sayers will say now?

 

Sorry roden my posts are never meant to be condesending. If you took it that way it's all you.

However you cancel out your own argument! You said there are no tests on the 5w-20 that you know of so how do you know if it is bad?

The main point of my post was the argument that the switch was just for cafe standards and I was giving my opinion as to why I think there is more to it than that or ford would not want it in their older engines.

That is all I wanted to say. And I am glad you spend so much on your oil, good for you.

Putting mods on your/my trucks has nothing to do with embracing change. How many people on here buy mods but still swear by 10w-30 because their friend used it for years and never had a problem and when they look in the bottle 5w-xx looks too thin.

Use what makes you happy.

 

Wow. This thread has come back to life in full swing again.

I have always advocated (my opinion) that if you use a quality oil and perform the recommended maintenance, it's very unlikely you will experience any failure due to poor lubrication (the reason Quaker State was advocating their 250,000 mile warranty). 5w-20 will probably work fine, but there just hasn't been enough documentation, or time to prove it yet. It may very well prove to be an adequate, or even a superior oil. I just want to see more proof before I jump on the bandwagon. 5w-30 and 10w-30 have a proven track record. My opinion for the reason Ford has gone back and recommended it for the older engines is to increase the level of confidence in this oil. The more they can get people to use it, the better it will be accepted. All we can hope for is that Ford is right on there recommendation and it doesn't turn into another Firestone tire type fiasco that cost them millions of dollars.

For now, I will stay with the more commonly used 5w-30 and 10w-30.

 

WOW! I have seen telethons that did not last as long as this thread! I use 5W-30 Royal Purple with Mobil One filter and change at 6000 miles in my 2001 4.2 and my wife's 2002 4.6. I sleep very well at night, thank you.

 

Is Mobil 1 filters good? ive heard that motor craft filters are good but not to use FRAM cause of the cardboard seal (ive wittnessed that myself). I think ill switch my fuel and oil filters to motorcraft and my oil to, as always, Mobil 1 5w20 full synthetic for year round use, from 10 degrees to 100 degrees. Sound good?
-Patrick

 

Mobil 1 filters are one of the better filters, but one of the more expensive ones. I would suggest either the Motorcraft or Purolator Pure One filters. I use Chevron Supreme Motor oil and either Motorcraft oil filter or the Purolator Pure One filter and I sleep very good at night also, but not sure what sleep has to do with oil and oil filters. Should I be staying awake all night because I don't use the more expensive synthetic oils and filters?

 

What motivated me to reply was that you imply through out your posts that any one who doesn't buy into this concept is backwards and myopic. The reason behind this change is CAFE/environmental and you cannot find evidence to prove that there is any other functional reason. If you have some bring it. I didn't say that there are "no tests on the 5W-20 that I know of". I said that no one can show an oil analysis that shows lower wear metals by using 5W-20 as opposed to 5W-30 because it hasn't happened. Not because the data isn't out there, but because it empirically hasn't provided better protection. Anyone can get an analysis done for $20 bucks so let see where this supposed better protection is. I'm not saying that you are going to grenade your engine by using 5W-20 (but its kind out funny that Ford found excessive wear in the 4.0L and 3.9L tests and don't recommend it). I'm saying that if you are going to talk down to people, bring something other that empty platitudes.

 

Roden,

I beg to differ. So far the only person talking down to someone is you. You are a very eloquent writter and use lots of well placed big words, however like a lawyer/politician you have danced around my statement about the use of this weight oil in older engines isn't for cafe. Take a look at Navimans post he answered it perfectly as he usually does.

I am not the only one on this board that has trouble with "The I have been doing it for years so..." statement. I am not trying to prove anyone wrong or put them down as you say all I am doing is trying to keep the dialog going and offer another point of view that someone might have missed or not thought of or in this case too stubborn to accept change or an alternative way to look at it.

Of course I don't have an oil analysis to back it up (Do you?) I am just offering a different point of view (Mine and only mine) to why Ford is recommending 5w-20. You are the one who seems to be so bent out of shape about this change. What difference does it make to you?

By the way I still use 5w-30 castrol gtx dino oil and a motorcraft filter. You know why? Because it is readily avaiable, inexpensive, and comes in these great 5qt containers that I can put the used oil back in and take to the recycle center. When 5w-20 gets that easy I will make the switch. (All of my vehicles call for 5w-30)

what a great site!

 

This is the thread that will not die. 5W-20 and 5W-30 start out as the exact same oil. They are both the same 5W base stock. More viscosity modifiers are added to the 5W-30 to allow a wider range. We are arguing over a gnats as*hole worth of difference. Use what the manufacturer recommends for your vehicle and change it on a regular basis and your engine will thank you in the long run. Or use what you want and change when you want and you may get the same results. The important thing is to keep it clean.

 

More info....someone earlier mentioned that Mobil1 had no plans to make a 5w20. I called their customer service and the guy said that Mobil1 will indeed have a fully synthetic 5w20 early next year. I also asked him if I could change to Mobil1 with 15K on my engine. He said that it would be a perfect time BUT to wait until the 5w20 comes out next year. He said the 0w30/5w30 would work fine BUT I wouldn't want to void the warranty. Take it for what its worth but that's what I'm going to do.