what weight oil? 06 Mustang GT

JTGrant

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Sep 29, 2005

#1

• Sep 29, 2005

• #1

I know Ford recommends 5w20 for the new mustang GT. I just seems so thin.; I am going to let the motor break in on this oil. I am going to use Mobil 1. I would like to use Mobil 1 5w-30 syn. I care more about protection than MPG. I have heard people say that ford also tighten the bearing tolerances on the modular motors. Does anyone here have information on the hot topic? If the engine is designed to run 5w20 then that is fine. But if is just to increased MPG that crap. If Ford is screwing their customers just to make CAFE happy. That sucks for us. What do you guys run in your Mustangs?(GT) :damnit:

I have seen many oil test results and the Motorcraft 5w20 has alway got great low wear numbers, but then people say that 5w20 is crap. Wish I could get a straight answer.

 

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pyro_la

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Nov 16, 2004

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Sep 29, 2005

#2

• Sep 29, 2005

• #2

15w40

when i get my stang im gona be puttin in mobil 1 15w40, its the red performance oil. it should be alright since i know alot of ppl puttin it in their cars when the manufacturer orders a lower grade. you dont want to be running that grade in the car when it gets colder though. this oil is esspecially good if your going to be running the car hard, its practiclly a race oil, or as close you can get it from a auto store.

 

JTGrant

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#3

• Sep 29, 2005

• #3

the only 15w40 that mobil makes is the diesel oil. You maybe thinking of 15w-50 that is too thick for the new 3v 4.6 motor.

 

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T4B

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Sep 17, 2005

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Sep 29, 2005

#4

• Sep 29, 2005

• #4

I use 5w30 Mobil 1.

 

JTGrant

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#5

• Sep 29, 2005

• #5

T4B said:

I use 5w30 Mobil 1.

Click to expand...

Is it a new mustang?
How many miles?

 

cleveland

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SF>...

Sep 29, 2005

#6

• Sep 29, 2005

• #6

Eh, see signature. There is no better.

-Dan

 

GOLDENPONY

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Sep 29, 2005

#7

• Sep 29, 2005

• #7

oil

I changed my oil first @ 500 miles and put in 5W20 Castrol. I am going with Mobil 1 5W20 @ 2000 miles and again @ 5000 miles and every 5000 after that. I think Mobil 1 5W20 will be fine. Just my $.02.

 

JTGrant

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#8

• Sep 29, 2005

• #8

it's just all the old school crap that has been put in everybodies heads, about oil. I am going with motorcraft until 5000 miles then I have no idea what I am going to put in it. I just want the best for my car.

 

Quags

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Dec 28, 2004

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Sep 30, 2005

#9

• Sep 30, 2005

• #9

I've used a 50/50 blend 5w20 at 3000 and 5000. Coming up on 10000, it will be Mobil 1 5w20.

Luis

 

bhuff30

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Sep 30, 2005

#10

• Sep 30, 2005

• #10

New engines have tighter clearances that allows the use of 5-W20. Since ford recommends it, they will never deny a warrenty claim based on the grade of oil you are running. Besides, 5-20 will give you better gas milage and more power than a thicker oil.

 

05SatinSilver

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Mar 30, 2005

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Sep 30, 2005

#11

• Sep 30, 2005

• #11

This topic is open to so much debate, you'll get at least 10 different answers to the question. I changed my oil with Ford's 5w20 at 500, 1500 & 5000. Then, I switched @ 6000 with 100% Synthetic 0W30. Personally, I'll stick with AMSOIL, they developed the world's first API rated synthetic motor oil in 1972.
http://www.advanced-synthetics.com/

Here's an interesting quote:
"Because a synthetic oil is chemically produced, there are no contaminants in the oil. By contrast, conventional oils contain small amounts of sulfur, wax, and asphaltic material that can promote detonation as well as varnish and sludge buildup. With no wax, synthetics will flow at much lower temperatures than conventional oils. In fact, synthetic oils are now available with viscosity ratings as low as 0W-30, as in Mobil 1’s new Tri-Synthetic blend or Castrol Formula SLX. These oils flow more than seven times faster than a conventional 5W-30 motor oil during initial start-up, yet at normal operating temperatures act like a regular Grade 30 oil.

An 0W-30 synthetic oil is capable of pumping easily at -62 degrees F and flowing at even lower temperatures. Conventional oils are essentially frozen solid at that temperature, so there’s simply no conventional equivalent to this new grade. There are 5W-30 conventional and synthetic oils, but even here, the synthetic has a real-world advantage: Mobil 1’s 5W-30 will pump at -58-degrees F, compared to about -35-degrees F for a conventional oil."
http://www.carcraft.com/techarticles/15378/


Note the temperature that 0W30 can flow easily at, -62 degrees. Now that's cold!
That is why I use AMSOIL's Series 2000 Synthetic 0W-30 Motor Oil
https://www.amsoil.com/storefront/tso.aspx
I plan to change my filter (AMSOIL or course) and oil every 10,000 miles. The oil is good for 35,000 but the filter is only good for 12,500.
At my 1st oil change, I plan to have AMSOIL do an oil analysis, just to check on things. https://www.amsoil.com/storefront/oai.aspx

Well, that's what I'm doing. I have an 05 GT, put the AMSOIL oil in at 6,000 and I currently have 10,800 on the car.

Dave...

 

JTGrant

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#12

• Oct 3, 2005

• #12

I just want to use what is best for the engine. I rather have protection over emissions and mpg.

 

R

ruffy

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Oct 5, 2005

#13

• Oct 5, 2005

• #13

I couldn't find a decent 5W20 oil so I went with Mobil 1's 5W30. So far no problems and I don't think it will become an issue.

 

Big-Foot

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Aug 20, 2005

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Oct 5, 2005

#14

• Oct 5, 2005

• #14

I haven't found a full synthetic 5w20 yet so I am running Valvoline 5w20 dino oil for now.

I just wish that Ford would get their act together and either make it a 6qt or 7qt capacity rather than a 6 liter capacity. After all - when was the last time you saw oil sold by the liter in the USA?

 

JTGrant

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Oct 5, 2005

#15

• Oct 5, 2005

• #15

ruffy said:

I couldn't find a decent 5W20 oil so I went with Mobil 1's 5W30. So far no problems and I don't think it will become an issue.

Click to expand...

What do you mean Mobil1, redline, and amsoil make a great 5w20

 

Big-Foot

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Aug 20, 2005

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Oct 6, 2005

#16

• Oct 6, 2005

• #16

Couldn't find the M1 Synthetic locally and that's usually all I use. Redline is not sold locally anywhere - I use their gear lube and ATF in my racecars. I won't use Amsoil for many of the same reasons I won't use Zaino.. Personal preference I guess. I'll keep my peels eyed for the M1 5w20 though...

 

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drbobvs

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Jul 19, 2005

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Oct 6, 2005

#17

• Oct 6, 2005

• #17

Stick with 5w20!!! Its "pumpability" at start up is much better. You will NOT get better performance, longer wear, better milage, smoother operation or any other so called benefit the neanderthals at the local pub will be spewing when this subject comes up. Look here for everything you ever wanted to know about engine oil.
http://www.boss302.com/oil.htm

 

JTGrant

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#18

• Oct 6, 2005

• #18

nice site, good information. this is a good site here

www.bobistheoilguy.com

 

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06GTVert

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Aug 11, 2005

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Oct 9, 2005

#19

• Oct 9, 2005

• #19

Big-Foot said:

Couldn't find the M1 Synthetic locally and that's usually all I use. Redline is not sold locally anywhere - I use their gear lube and ATF in my racecars. I won't use Amsoil for many of the same reasons I won't use Zaino.. Personal preference I guess. I'll keep my peels eyed for the M1 5w20 though...

Click to expand...

If you dont use Zaino, what do you use?

 

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greg anderson

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Aug 26, 2005

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Oct 10, 2005

#20

• Oct 10, 2005

• #20

oil grade

The new 3v 4.6 has extremely close tolerances, allowing the use of the 5w20, and actually needing it. Don't believe the crap you hear from the local "experts", they didn't engineer the motor, and are going on old knowledge at best, BS at worst!! Think about it; would Ford give themselves a black eye by trying to use oil that wasn't right for a motor, shortening its' life? NO WAY! That is thier bread and butter they would be messing with, thier reputation for building a motor that will last!!
The new Dragrace prostock engines, producing close to 1450 hp, use oil much thinner than 5w20. The numbers were so low, i couldn't believe it. In the low single digits, for the higher number. If ever a motor needed protection from high bearing loads, these would be it!