Good, but its not the recommended viscosity. And theres your problem.


Again, the tech has no idea what will and won't damage the engine. Maybe he was speaking from experience, but I would completely trust the engineers who designed the motor and cam system over a mechanic every day of the week.


Imagine for a minute that your engine does blow its cams, and they say it's because you had the wrong oil viscosity in there. Do you think this tech mechanic is going to step up and say it's okay, or it's his fault.

No he will say, "Oops." and go on turning wrenches and reading the procedures like he does every day.

 

15w40 gas engine oil is also SAE certified. Try that stuff

 

there is only a need to prove what works in your engine .. no need to prove what does`nt

 

if you are not harming it, you are aging it faster

 

As others have said, they're not going to put down in writing everything that doesn't work or isn't suggested to use in the engine. They tell you what DOES work so the consumer will know what to use. You do realize that, when you use a different viscosity/weight of oil, you're telling the engine's engineers you know more about what that engine needs than they do...right? Else why not use the oil they've documented as being the optimum weight and viscosity? The only documentation you're going to find is in your owner's manual. If you choose not to follow those directions, then you have only yourself to blame for the results.

By the way, messing with the timing on the cams with these new engines is really not a good thing. Just something to think about.

 

good answer .. engineers test these engines for hundreds of hours under unbelievable conditions and know what works ..stick with what it says on your oil cap

 

I'm not arguing nor denying the fact that Ford recommends (and it's documented in the owners manual) to use 5w-20....I'm using Mobil 1 synthetic gold; NOT diesel, not corn oil, not 15w-40.

I guess I cannot expect anyone here to provide any documented proof that using 5w-30 will cause damage at this point. Instead, I get ridiculous statements to use diesel oil, etc. I can understand if you don't have a direct answer; it's also easy to state common sense answers to use what's recommended, or that "Ford engineers designed the engine to use 5w-20. I'm not disputing these.

All of the serious answers have been appretiated, and I'm not disputing the use of 5w-20. I will certainly switch back to the recommended 5w-20.

However, my question has gone unanswered: can anyone provide a link or a document that states that engine damage MAY or WILL occur if 5w-20 is not used? I've searched for awhile on the internet, have read many "how it works" articles on the TiVCT, but have yet to find anything that states engine damage will occur if 5w-20 is not used. Perhaps someone has come accross an article that does specify what I'm looking for. If you find it, I'd appretiate it being posted, or perhaps a PM to me. Common sense is understood; I did not do something that can be considered above that IMO.

Again, just someone trying to learn something. Sarcasm is always expected, but usually an answer comes along that has documented merit.

 

From info I have read...http://www.fordmuscleforums.com/2011...echnology.html

"The Mustang GT 5.0-liter V-8 uses a Ti-VCT system actuated by camshaft torque, with assistance from pressurized oil. Using camshaft torque energy provides even faster throttle response and maximizes use of existing energy to aid fuel economy. Working like a ratchet, the one-way valves allow precise timing of camshaft events, continually optimizing timing to provide maximum torque or maximum fuel economy, based on driver input.
"Ti-VCT technology will continue to proliferate across the Ford powertrain portfolio," said Samardzich. "By 2013, you can expect to see this advancement available on 90 percent of our nameplates." "

Now, with that info, wouldn't the change of oil viscosity also effect the pressure level that the oil is applied to the cam system? Just like it changes to reading of a mechanical gauge.

 

The reason your other threads were closed was simple: misinformation was being spread and someone came in with legitimate info and put an end to the questions. Bottom line, per Ford engineers, changing the viscosity of the oil requires a change in the calibration of the motor, so it's in YOUR best interest to follow their specifications and stick with the 5w-20. If you're concerned with the normal synthetic blend being an issue, I suggest going to a full synthetic 5w-20, like Amsoil or Royal Purple, and go with a higher quality filter.

My job on these forums is to keep the debates civil, and the information legit. I don't like to see a ton of misinformation spread and other members confused on the validity of topics, so I was contacted by someone who knows what they were talking about and closed the thread. It was nothing personal against you or anyone else, but rather to keep the misinformation to a minimum.

 

Again, you're not going to find documentation of what DOESN'T work or what will harm the engine. Where do they stop? How far out from the optimum is reasonable to provide documentation of things that will harm the engine? You said the corn and crisco oil mentions were sarcastic, but how ridiculous do the options have to get before Ford assumes people are smart enough not to use it? By the way, I've heard of guys having cars they owned destroyed by their wives putting cooking oil in the car because they thought they'd "help out" and start to maintain the cars they drove every day, and they were checking the oil. It was low, they added canola oil and unsurprisingly the engine seized up not too long afterward. Does Ford need to include documentation about that because it actually happened? You wouldn't be able to fit the manual inside a library, much less your glove box.

They tell you what will work best in the engine. If you think they're wrong--and when you use a different weight of oil, that's exactly what you're saying--the burden of proof is on YOU to show such. Because if your car starts exhibiting timing issues in 5000 miles, YOU are the one who will be responsible. After all, YOU decided the engineers didn't know as much about the engine THEY DESIGNED as you do, the driver of a car that happens to have one of those engines in it.

If you're looking for documentation about any specific oil or product that is NOT DESIGNED to work with the engine, you're not going to find it.

 

Go ahead and use whatever weight oil you want. It's your car. It's your risk. It's your dime.

The weight Ford tested with and feels comfortable putting their money on the line (warranty) is listed in your car's owner's manual.

I've done product development engineering for 15 years now. I know enough that I am not going to use an oil weight Ford either did not test or perhaps tested and rejected. I don't need to see damaged engines from every other weight of oil. I only need to know it's not what Ford tested. If it's not what they tested then we don't know if it works long term or in various conditions. If you want to test 5W30 for your own driving, that's up to you. Good luck. Hope it works out.

It is that simple. You can use what Ford says works or you can conduct an engineering experiment.

 

How about I show you documented proof that if you use anything other than Ford recommended spec oil that your warranty will be void and if your engine burns up you'll have to pay the repairs out of pocket?

Would that be good enough?


Read your owners manual. What does it say on the subject?

 

I don't understand why you have a problem using the recommended weight if you've never had a problem with the recommended weight. Did I miss something?

 

dat right der is some good infer! Bravo mane bravo.

 

Nope. Another silly thread that's all

 

Things have changed. Engines are made to very much closer tolerances now.

In the 60's and 70's i ran 20w50 and called it a day .

 

Let me begin by saying that I work daily on large industrial diesel engines, high speed boat engines, amongst many items dealing with lubrication. Although its not a car many of the same principles apply.

There are many reasons why you should use the manufactures recomendation for lubrication within your car. Having an oil that is higher in viscosity might not be a problem short term, but there is a problem long term especially with the bearings in side of the engine. you will get an increase in engine load, more drag within the journal bearings, powerloss, and increase in fuel consumption. The manufactures of engines like ford does many hours of research on what is the best oil to use for their products.

also taking from a site that I used when i went to school to get a degree in engineering.

"If the oil selected is too low in viscosity, heat will generate due to an insufficient film thickness and some metal-to-metal contact will occur. If the oil is too high in viscosity, heat will again be generated, but due to the internal fluid friction created within the oil. Selecting an oil which is too high in viscosity can also increase the likelihood of cavitation. The high- and low-pressure zones, which are created within the oil on each side of the area of minimum film thickness, can cause oil cavitation in these bearings. Cavitation is a result of expansion of dissolved air or a vapor (water or fuel) in the low-pressure zone of the bearing. The resulting bubble implodes, causing damage, as it passes through the high-pressure portion of the bearing. If the implosion or collapse of the vapor bubble occurs next to the metal surface, this can cause cavitation pitting damage to the metal. If the implosion of the bubble occurs within the oil, a micro hot spot or micro-dieseling can occur, which may lead to varnishing within the system. "

Source: http://www.machinerylubrication.com/...ng-lubrication

Hope this helps.

 

When the 4.6 was introduced in the crown Vic's the police officers believed that 5w-20 wasn't good enough for the way they drove. They were stuck on 10w-40 as being a good "protection" oil. Theywere having oil filter literally explode because the oil pressure would get soooo high that the oil relief valve couldn't let the pressure by fast enough at high rpm. Needless to say.the went with 5w-20 after Ford denied their warranty claims. And they thought they new better than the engine designers also

 

So, let me get this straight... You want to run a oil that inst recommended for the engine? And it does not provide any benefits over the recommended? WHY?

 

You might as well close this one too