Just read through the ccv mod thread a couple posts down... reminded me i was planning the use stiction additove on my next oil change. 257k miles, stock truck. Smokes white/light grey when really cold, and above 1500rpm when its had some idle time. Once fully warmed, ive only seen the smoke once when driving about 20 mph. Usually i dont notice any smoke. But in the interest of not changing those pricey suckers, i thought perhaps the additive would be a good thing.... so let er rip. Love it, Hate it, used it, abused it.
and heres to hoping that im not opening a can of worms, with pandoras box at the bottom.... lol

 

Won’t hurt anything but won’t I won’t guaranteed it will help either. Most of those are designed for the 6.0 style injector. That being said I have run some before in mine when I first got it to just give it the best clean possible.
If you want to try it go for it. Absolutely nothing to lose and may gain.
ive heard good things about Archoil AR9100 and Rev X as well.
Making sure you are running good oil and changing regularly goes a LONG way. These trucks more than any others like it. It’s is their lifeblood. I personally run T6 rotella. They now even make in 15w if that is more your speed but i prefer 5w for cold morning starts.

 

I never use oil additives, but always use fuel additives. But hey, give it a try.

Synthetic oil helps cold weather starts substantially.

Could be a bad glow plug or two as well. They can be ohmed out pretty easily.

 

the only way to be certain you are using “good oil” is to verify by reading the container it comes it, it will list the specifications that exact product meets.

the ford specification for your 7.3 is if WSS-M2C171-F1 the oil meets that then it has every additive your 7.3 requires, this includes the anti foaming additives required for the 7.3 injectors.

the spec is in your owners manual if you forget or need to look it up while oil shopping.

fwiw, shell rotella t6 stopped meeting the ford spec years ago when the SAE came out with the new categories. i quit using it then snd have not looked at it since. verify it yourself by reading the container before you purchase any oil

edit for accuracy. WSS-M2C171-F1

 

that’s a bummer. Just got that 5 gallon special over the holidays. So far runs way better on it than the Dino I was using. We shall see. Down another rabbit hole. I apparently like them☺️. New one every couple months guaranteed. PMS...

 

7.3 injectors don't suffer from stiction they just wear out. I would recommend buying a shim kit and shim your injectors, this is alot better than wasting money on additives and its proven to give your worn injectors new life. Heres the kit I used.
https://www.ebay.com/itm/94-03-7-3L-...oAAOSwZuFdjt5p

 

run a non ford 7.3 spec oil without the anti foam additive in it and the piston will most definitely stick when the oil foams, in fact the metal to metal contact is going to scar the parts which requires injector replacement, no shim is going to fix a seized piston. the shims are to compensate for worn poppet valves in the injector, which just so happens to be the only real wear part in the injector and is not available to purchase separately like the other parts. this is why new and not rebuilt injectors are preferred, you cant rebuilt or replace the popet, only shim it which is fine unless it is taken apart and then the orientation is lost. ( which is why so many reman injectors fail )

 

what are you running? Interestingly I looked up motorcrafts own oils and the one that meets your specs is a 5-10w30.
WSS-M2C214-B1

 

i run whatever WSS-M2C171-F1 spec oil is on sale.

I am loyal to specs not brands when it comes to oil and lubes but I do like the connivence of the motorcraft 5 quart jugs part # XO-15W40-5Q3SD

edit accuracy. WSS-M2C171-F1

 

OK, motor oil can be the source of a lot of debate and frustration for the FTE. It has been in the past and will be in the future...

WSS-M2C214-B1 information
Source - https://www.fcsdchemicalsandlubrican...ry=Motor%20Oil

WSS-M2C171-F1 information


As anyone can clearly see above, Rotella T6 is in fact approved for the 7.3L PSD. I also saw the other flavors of Rotella T6 in the WSS-M2C171-F1 PDF source document linked below. Now, is this to say that CJ and CK specifications are identical, I don't think so, but I don't know for sure. I do know that Rotella T6 has been run for literally MILLIONS of miles in these engines. Motorcraft (on their own website for lubricants) says to run WSS-M2C171-F1 specification lubricants. Now, I am not always one to follow the book, but felt I needed to provide a bit more background information regarding the discussion taking place in this thread.

Maybe this will answer questions, maybe it will create questions. Either way, the facts are here in plain sight, not simply eluded to and a scavenger hunt sent forward to those that are curious.

Source - https://www.fcsdchemicalsandlubrican...ry=Motor%20Oil

Document source - https://www.fcsdchemicalsandlubrican...SSM2C171F1.pdf

 

in my opinion statements like that are exactly what causes the confusion which leads to the debates.

yes the specific shell product you listed meets WSS-M2C171-F1 but if somebody just remembers reading “rotella t6 “ is approved they can walking into a autozone and pick a non approve rotella t6 that would not have the anti foaming additive.

so to be specific i suggest not to brand shop but to verify the container of oil you intend to buy in the in the store has the WSS-M2C171-F1 spec printed right on it. pretty hard to be confused by that. cut right through the marketing, advertising and internet chatter and just confirm the container states it meets WSS-M2C171-F1 spec.

 

In my opinion vague and blanket statements like "use the service manual" or "fix it by fixing it" or "do not use this" are exactly what causes frustration and confusion which leads to debates. We may agree to disagree here, as we have in the past, but I am stating factual information given by the very sources and specifications you first indicated. Maybe I am wrong, I am wrong everyday of my life...

I know your history, experience, knowledge level and believe each of those is far superior to mine in just about every aspect of this truck, but that doesn't change the fact that Rotella T6 0w40, 5w40 and 15w40 are on the approved "Motorcraft lubrication" list, which is what you referred to earlier. In fact, your reference WSS-M2C214-B1 is quoted by Motorcaft as NOT TO BE USED. This can be viewed as a point of confusion if anything in this discussion.

I'll directly quote the Motorcraft site again in case you missed it the first time...

Now, best I can tell from the Shell Rotella site, there are only 3 varieties of Rotella T6. They are 0w40, 5w40 and 15w40.

Shell Rotella source - https://rotella.shell.com/en_us/prod...synthetic.html

In addition, I have included the WSS-M2C171-F1 Motorcraft approved list in the 7.3L PSD Tech Folder. You can download the list directly from this link. In that list, you can see each of the three Rotella T6 blends listed.

Each of those full synthetic blends of oil are on the Motorcraft approved WSS-M2C171-F1 list, which in turn removes any confusion when selecting an oil for the 7.3L PSD when the bottle says Rotella T6 on it.

What I said and what you quoted was...

This is a factual statement based on what Shell Rotella has provided us and based on what Motorcraft has provided us. I stand by my original statement that Rotella T6 is in fact approved for the 7.3L PSD. I don't care to discuss oils that are no longer available due to the recent change in specifications and frankly because everyone has an opinion about oil and which is the best. That is not what I am saying at all. I am saying that Rotella T6 is in fact approved by Motorcraft in each flavor it is available in from Shell Rotella.

 

I wasn’t aware that rotella T6 5-40 had different specs? I thought T6 5-40 was all the same? Does rotella change them from time to time?

 

Don't use it. Our systems don't need it and don't do well on additives.

 

I used the Archoil stiction additive (9100 I think) right after buying my Ex hoping to cure cold sticking injectors, before learning that it can only help with that on the 6.0. As far as I can tell it did no good and no harm. Many other people have used it and other additives without any issues on the 7.3.