Oil Change Question?

[AnotherS197GT]

Pretty sure that GT500's run 5W50 stock.

Ford also recommends running only 5 quartd even though most use 6-6.5 quarts. Ford recommends using only motorcraft oil, not royal purple, amsoil, etc. I guess Ford branded diff fluid and tranny fluid is better than all of the aftermarkets fluids too.

There are a large number of things Ford says to do.

Everyone will have their own preferences on what they feel is right. Going by what Ford says is the safest way at minimum to run your car normally, but not necessarily optimally.



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Ford doesn't spec 5 quarts in any V8 after like 2003 or 2004. They are all 6+ quarts.

 

[BruceH]

Bruce, do you have any idea what the clearances are on older 4.6s? The early 4.6s in panther cars used 5 quarts of 5w30, then they switched to 5 quarts of 5w20, and now 6 quarts of the 5w20. These are all 2V cars though.

I'm also a little curious about some EB vehicles. IIRC 2010 EB vehicles call for 5w20, but the 2011+ call for 5w30.

I don't have any 2v manuals. For that matter I don't know what combination of clearance, passage ways, volume, oil pump, and other specs add up to determine what is needed for viscosity. I do believe that Ford does. Don't know about the ecoboost either but that sounds pretty plausible. I'd imagine that oil cooled turbos are pretty hard on the oil and probably keep the temps up more than a non-turbo motor.

5w-20 wasn't always available so it couldn't of been called for until it was. The first vehicle I owned that called for it was a 2005 Accord. Everthing else was 5w-30 or 10w-x.

Just out of curiosity when did Ford start to specify 5w-20?

 

[AnotherS197GT]

I don't have any 2v manuals. For that matter I don't know what combination of clearance, passage ways, volume, oil pump, and other specs add up to determine what is needed for viscosity. I do believe that Ford does. Don't know about the ecoboost either but that sounds pretty plausible. I'd imagine that oil cooled turbos are pretty hard on the oil and probably keep the temps up more than a non-turbo motor.

5w-20 wasn't always available so it couldn't of been called for until it was. The first vehicle I owned that called for it was a 2005 Accord. Everthing else was 5w-30 or 10w-x.

Just out of curiosity when did Ford start to specify 5w-20?

This is what I keep on my tool box at work:

https://www.fcsdchemicalsandlubricants.com/main/quickref/oilchart.pdf

We have a more comprehensive list somewhere else, but I can't find it online. Sometime in the late 90s I think.

 

[Riptide]

It was Scott Whitehead who said it was all about CAFE and to stick with 5w30.

You guys have memory problems.


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[Mystickeith50]

No it wasn't. Many people have said that not just him. Plus ford makes engines that go to several parts of the world in all diff climates and only the ones here specify 5-20. Not Australia not Europe etc.

 

[Sky Render]

In the Owner's Manual, Ford also recommends using only BP fuels...

 

[Grabber]

Ford doesn't spec 5 quarts in any V8 after like 2003 or 2004. They are all 6+ quarts.

Not sure if serious....

I've had 4 Mustangs, and out of the all of the Dealerships I have had a chance to BS with, STANDARD, they put in 5 Quarts, unless otherwise requested. This is by the book.

Sky made a good point too, Ford calls for BP gas, and that is one of the worst gases you can put in your car.

I put 6.5 quarts in all of my cars. Don't need any more than that.

Those of you that want to put this to the test, take your car out with 5W20 oil on a HOT summer day, drive 30-40 miles, get on it a bit and bring the car home. Immediately, drain your oil pan. 5W20 comes out like water. Do you really want thin oil lubricating your motor in those temps? Personally, I wouldn't.

Now, do the same thing with 5W30. It will come out as if the car had fresh, cold 5W20 in it, which is fairly thick when it isn't heated up.

OP - Go with what you prefer. I follow the same rule of thumb with gasoline. The higher the octane, the safer the motor is.

 

[Grabber]

In the Owner's Manual, Ford also recommends using only BP fuels...

Dude, it is in the Ford manual. If Ford says to use BP, you MUST run BP.

Anything else is bad for the car.

 

[AnotherS197GT]

Not sure if serious....

I've had 4 Mustangs, and out of the all of the Dealerships I have had a chance to BS with, STANDARD, they put in 5 Quarts, unless otherwise requested. This is by the book.

Sky made a good point too, Ford calls for BP gas, and that is one of the worst gases you can put in your car.

I put 6.5 quarts in all of my cars. Don't need any more than that.

Those of you that want to put this to the test, take your car out with 5W20 oil on a HOT summer day, drive 30-40 miles, get on it a bit and bring the car home. Immediately, drain your oil pan. 5W20 comes out like water. Do you really want thin oil lubricating your motor in those temps? Personally, I wouldn't.

Now, do the same thing with 5W30. It will come out as if the car had fresh, cold 5W20 in it, which is fairly thick when it isn't heated up.

OP - Go with what you prefer. I follow the same rule of thumb with gasoline. The higher the octane, the safer the motor is.

I work at a dealer lol. All the newer 8s call for 6+ depending on the motor. They stopped doing 5 quarts after 02.

 

[Grabber]

I work at a dealer lol. All the newer 8s call for 6+ depending on the motor. They stopped doing 5 quarts after 02.

Your dealership must be very special then.

Why would they stop using 5 quarts during the middle of the model year for New Edge mustangs?

5.0's can handle up to 8 quarts of oil, and need a minimum of 6-6.5, 3V cars can only hold 7 quarts.

 

[BruceH]

No it wasn't. Many people have said that not just him. Plus ford makes engines that go to several parts of the world in all diff climates and only the ones here specify 5-20. Not Australia not Europe etc.

Until recently only the US has the technology to manufacture 5w-20 base oils. Austrailia just started making it in the last few years and I think you will find 5w-20 now speced in some Austrailian vehicles.

Your owners manual calls for 5w-20 in Canadian vehicles too.

Scott Whitehead has been discreditied by those who worked with him. In a nutshell they said he was a disgruntled FORMER employee. But once again it's all internet stuff so take it for what it's worth.

The last new Ford vehicle I owned prior to the 2008 Mustang was a 2000 Ranger and it called for 5w-30.

In the end you can believe what you want, it's a free country. I don't buy into the big conspiricy theory that generates lots of money for boutique oils and testing companies. All I need for proof is the excellent longevity reputation Ford motors have. Ford is always on the leading edge for motor technology as is Honda. Both have motors that last along time when cared for as directed. Both spec 5w-20 for most of their motors. I trust those results and their engineering team far more than I do random postings on the internet.

Sorry guys, the empirical testing just isn't there. Or should I say that internet rumors aren't enough to sway me and I will always question things that don't make sense to me. This is a prime example. More mpg would be the result of less friction. Worse mpg would be the result of more friction. More friction would cause more wear. The cafe theory just doesn't stand up to this very basic reasoning.

 

[AnotherS197GT]

Your dealership must be very special then.

Why would they stop using 5 quarts during the middle of the model year for New Edge mustangs?

5.0's can handle up to 8 quarts of oil, and need a minimum of 6-6.5, 3V cars can only hold 7 quarts.

Or your dealership is retarded. I have a ford capacity sheet on my tool box. It's not a "my dealer" thing. It's a ford thing. Ford changes shit all the time. The 3.7 in the mks calls for 5.5 some years and 6.0 some years. Same with the LS v8. Some are 6.0 some are 6.9. There are different capacities for the same engine for different years.

I'm not gonna sit here and pretend like I know why they do it, but I know they do it. I think playing with weights is fine, but I think you'd have to be dumb to put the wrong amount of oil in it. Do you really think its ok to under fill by 1-3 quarts because some guys said they don't need more than 5 quarts?

 

[Seer]

Until recently only the US has the technology to manufacture 5w-20 base oils. Austrailia just started making it in the last few years and I think you will find 5w-20 now speced in some Austrailian vehicles.

Your owners manual calls for 5w-20 in Canadian vehicles too.

Scott Whitehead has been discreditied by those who worked with him. In a nutshell they said he was a disgruntled FORMER employee. But once again it's all internet stuff so take it for what it's worth.

The last new Ford vehicle I owned prior to the 2008 Mustang was a 2000 Ranger and it called for 5w-30.

In the end you can believe what you want, it's a free country. I don't buy into the big conspiricy theory that generates lots of money for boutique oils and testing companies. All I need for proof is the excellent longevity reputation Ford motors have. Ford is always on the leading edge for motor technology as is Honda. Both have motors that last along time when cared for as directed. Both spec 5w-20 for most of their motors. I trust those results and their engineering team far more than I do random postings on the internet.

Sorry guys, the empirical testing just isn't there. Or should I say that internet rumors aren't enough to sway me and I will always question things that don't make sense to me. This is a prime example. More mpg would be the result of less friction. Worse mpg would be the result of more friction. More friction would cause more wear. The cafe theory just doesn't stand up to this very basic reasoning.

Still waiting on your answer as to why Ford specs both 5w20 and 5w50 for the Coyote engine

Same engine, same internals, nothing special, other than a different suspension package and an oil cooler.

Now the roadrunner variant of the coyote 5.0 calls for 5w50.

Your one answer was intended use, well if I intend to beat the snot out of my non track pack 5.0 that has the same engine as the track pack 5.0, then I guess using 5w30, 5w40 or 5w50 would be perfectly fine then.

What people don't understand is, not every oil is created equally. I've seen the tests on motorcraft 5w50. After just a few miles it breaks down and becomes a heavy 5w40, so why not just run a good grade 10w40? Hmm, that's what all of the GT500 guys do.

When adding cooler fuels like E85 or running cooler thermostats, you see plenty of gt500 guys switching to 10w30.

Ford's #1 concern is gas mileage. If they do not meet a standard they will be subject to heavy fines. 5w20 oil helps with this on the performance vehicles. Heck it helps on a lot of vehicles, but motorcraft 5w20 does not hold up well to sustained abuse. Paying out a few engine warranty replacements for rattles, slaps and knocks is a lot cheaper than government fines.

Most analysis I've seen on Motorcraft 5w20 shows that it is actually on the heavier side and closer to 5w30, so no harm in running a 5w30 especially if you are introducing more than the average amount of heat into the motor.


As far as people jumping and saying "well, that's what Ford spec'd for the engine" have obviously not worked in any type of product development/engineering life cycle.

The Engineer designs the specifications, Accounting runs it through purchasing to see what the units can be acquired for, if it does not fit a certain pricing model, it is rejected and the specification has to be loosened.

Don't kid yourselves, Ford did not contract Conoco to formulate Motorcraft 5w20 oils because they were top notch quality, they did it because they met their pricing model of Cost vs. Quality vs. Speed of Product Delivery.

If people wanted to follow the above logic "because the Ford said so", then I guess those stock mufflers are really the best... the stock suspension is the best for the car... the stock tires are also the best. No need for a supercharger, the factory Ford induction system is the best, also those headers... nah, the factory Ford stuff is the best.

 

[Bullett]

So I can run 10w30 on my boosted coyote?.. Lol

 

[Seer]

So I can run 10w30 on my boosted coyote?.. Lol

plenty of people do.

 

[Grabber]

Or your dealership is retarded. I have a ford capacity sheet on my tool box. It's not a "my dealer" thing. It's a ford thing. Ford changes shit all the time. The 3.7 in the mks calls for 5.5 some years and 6.0 some years. Same with the LS v8. Some are 6.0 some are 6.9. There are different capacities for the same engine for different years.

I'm not gonna sit here and pretend like I know why they do it, but I know they do it. I think playing with weights is fine, but I think you'd have to be dumb to put the wrong amount of oil in it. Do you really think its ok to under fill by 1-3 quarts because some guys said they don't need more than 5 quarts?

First off, I don't use my dealers for oil changes, etc.

I put 6.5 quarts in ALL of my cars. Are you too blind to see that I posted that several times.

I guess the guys that have the Fastest Renegade Car (Sutton Ford) are retarded, and have no fucking clue what they are doing.

I am sure you can continue to tell me that because you work for a dealer that what they do is the fucking bible. All good dude. In my experience of dealing with many dealers, most put 5 quarts in any standard GT 05-10. I've seen it happen many times, etc.

Again, I suggest putting a minimum of 6 quarts in an N/A 3V, and 6.5 Quarts in a Blown 3V. At least 7 Quarts in a 5.0, etc.

Where the hell you are 1-3 is beyond me. 7 Quart Capacity on the 3V motor, most dealers I have seen put in 5 quarts. How is that 3 quarts below your "sheet" ????? Really dude?

If you want to continue this, I'd be happy to. No need to misconstrue what I have said and twist it to prove your point. Re-read my posts before trying to put words in my mouth.

I agree with you, I was just giving my opinion that dealerships in IL, not Dearborn Michigan use 5 quarts, not 7 quarts in all V8 models.

 

[AnotherS197GT]

Whatever dude, you said your dealer is saying 5 quarts is good enough. That's 1 quart under spec on 4.6s, 2 quarts under 5.4 3Vs and 3 quarts under spec for a 5.0. It's good you don't use your dealer for oil changes because they are too dumb to even follow fords guidelines as far as oil capacity. I never said you were stupid, but as far as I'm concerned and apparently you, 5.0 quarts is not good enough. You're telling me that I'm twisting words, but all I've ever said is that its stupid to under fill according to ford specs.

I sure hope my spec sheet is the bible for recommended fill, because is comes straight from ford.

 

[Grabber]

Whatever dude, you said your dealer is saying 5 quarts is good enough. That's 1 quart under spec on 4.6s, 2 quarts under 5.4 3Vs and 3 quarts under spec for a 5.0. It's good you don't use your dealer for oil changes because they are too dumb to even follow fords guidelines as far as oil capacity. I never said you were stupid, but as far as I'm concerned and apparently you, 5.0 quarts is not good enough. You're telling me that I'm twisting words, but all I've ever said is that its stupid to under fill according to ford specs.

I sure hope my spec sheet is the bible for recommended fill, because is comes straight from ford.

No hard feelings bro. It's not the dealer, but the mechanics that work on cars.

Also, what the hell is a 5.4 3V? J/K bro, had to, hahahahahaha.

I would be too scared to only run 5 quarts and fear my motor would blow up on me

 

[stkjock]

just looked in here for the first time.... I thought there was a oil debate thread already.....

personally - IMO I think most oils 5w-20 to 10w40 and most in between will work fine in mod motors

I've run 10w30 dino (break-in) 10w-40 Amsoil and 10w-30 Amsoil - motor still running strong after 7000 miles at 800+ hp

 

[AnotherS197GT]

I'd be terrified to let them touch my car if they don't even know proper oil capacities lol. Run far away and never go back.