I want to run my Mustang GT until about 500 miles and then change the oil. I woulkd like to go to synthetic oil. Some have said wait till 1,000 miles till you go to synthetic oil. I don't understand this because the Corvette and Cobra R come from the factory with synthetic oil. Thus during the first miles. What do you think?
Second question if I go to synthetic oil and I go with Mobil 1 is 5w-30 OK or should I find 0W-20? Let me know your thoughts. Thanks.

 

Is this Deja Vu? I coulda swore there was a lengthy thread about this this morning...

The concensus is 0w20, It's what Mobil is recommending for a 5W20 replacement.

Ah Ha, I knew I wasn't going crazy....

http://forums.bradbarnett.net/index.php?showtopic=10105

 

It wasn't this morning it was a couple days ago.

Mobil 1 says to get 0w-20 for it, however, its not the recommended stuff. Get the amsoil 5w-20.

 

Well, I was reading it on the crapper this morning before work

 

EWWWWWWWW.....TMI

 

Sorry about the new post. I couldn't get on this site for the last 20 hours and when I did I just posted. Sorry. Amsoil? I've heard it was the best but I was afraid since it is not a well know name (by me). Where do you buy it?

 

Incorrect Gransdale. Ford has a spec (WSS-M2C-153H) that an oil must meet in order to be considered the correct oil for these engines. Here's a quote from an F150 owner's manual regarding motor oil:

Notice it states 5W20 is recommended but notice the highlighted line in the quote. I'm sure there is a simlar statement in the 2005 Mustang owners manual. Since Mobil 0W20 meets that spec, it's just fine to use.

 

"When new cars come form the factory with synthetic oil the cylinder walls are honed to different specification, for ring sealing. I suggest waiting until 1000 miles to go to synthetic and go with the same weight (at least to start with)".

Thanks that is where my confusion comes in, I did not know this. At about 200 miles I'll have the dealer perform my free oil/filter and then at 1,000 I'll go to synthetic. Thanks

I saw some lab test reports on Mobil 1 as well as Amsoil and Mobil 1 did as good or better. These tests were done at an independant lab not Mobil or Amsoil.

 

its where we do most of our thinking

 

I changed mine shortly after 1000 miles and went with Amsoil.

Mike

 

Look in the yellow pages under "OIL" for dealers or go to amsoil.com - you can fill out a request form under FAQ

 

1000 miles though? Even though the first dealer inspection isn't until 3,000 miles?

 

I hear ya! I have done this at 1000 miles for all my new cars....Who knows if it paid off or not, only time will tell.

Mike

 

Incorrect Gransdale. Ford has a spec (WSS-M2C-153H) that an oil must meet in order to be considered the correct oil for these engines. Here's a quote from an F150 owner's manual regarding motor oil:

Notice it states 5W20 is recommended but notice the highlighted line in the quote. I'm sure there is a simlar statement in the 2005 Mustang owners manual. Since Mobil 0W20 meets that spec, it's just fine to use.[/b][/quote]
I am close to my first oil change, and figured it was time to do a little more research on the Mobil 1 product. I found some conflicts. The 2005 Mustang Owners Manual states:

"To protect your engine’s warranty use Motorcraft SAE 5W-20 or an equivalent 5W-20 oil meeting Ford specification WSS-M2C930-A."

I'm okay with the equivalency clause, however I'm not sure that Mobil 1 meets the Ford specification. Here is an excerpt from the Mobil website:

"Mobil 1 with SuperSyn 0W20 is engineered specifically for Ford, Honda and any other vehicle where a 0W-20 or 5W-20 engine oil is recommended. Mobil 1 with SuperSyn 0W-20 exceeds API SL/CF, ILSAC GF-3, and the performance requirements Ford WSS-M2C-153H specification. "

Here is what I am having trouble with. The specification numbers don't match up, and the Mobil conformance statement indicates that the product meets the "performance requirements" of the specification. Even taking the leap that the specifications are the same, are there other specification requirements, and does Mobil 1 meet those ? I am so on the fence. I want to use the synthetic to gain long engine life .. on the other hand I don't want to mess with the Ford warranty.

Anybody have additional information about Mobil 1 meeting the Ford specifications for the new Mustang engines ?

 

I changed mine at 3000-miles, and it was crystal clear.

 

Thats next to impossible.
If your oil is clean something is not right. The dirtier looking the better.
Dark oil does not indicate the need for an oil change. The way modern detergent motor oil works is that minute particles of soot are suspended in the oil. These minute particles pose no danger to your engine, but they cause the oil to darken. A non-detergent oil would stay clearer than a detergent oil because all the soot would be left on the internal engine parts and would create sludge. If you never changed your oil, eventually the oil would no longer be able to suspend any more particles in the oil and sludge would form. Fortunately, by following the manufacturer's recommended oil change interval, you are changing your oil long before the oil has become saturated. A good oil should get dirty as it does it's work cleaning out the engine. The dispersant should stop all the gunk from depositing in the oil pan.

The only real way to determine whether oil is truly in need of changing is to have an oil analysis performed. Since most people don't want to bother with this, it's acceptable to err heavily on the safe side and simply follow the manufacturer's recommended change interval for severe service. There are still a few cars that specify 3K intervals for severe service, but not many. If you look at countries other than the U.S., the oil recommended change interval is much higher than even the normal interval specified by vehicle manufacturers in the U.S


Anyone using Amsoil beware. Although a good oil, it is NOT API certified.
You may have warranty issues if there is a problem. I have never used it, but I have seen more numbers on it than I care to. The only down to AMSOIL that I have seen is viscosity increase (slight) over the life of the oil. Other than that it appears to be a very good product.

 

Bill, is the 'Free' oil change an extra service you paid for, or do we all get that 1st one free? Just curious, because I noticed they put a little stickie in the upper front window with an appt. date for 1st service.....

 

First one is free. Did it today at 725 miles. I'll change it again around 3000 and switch to Mobil one with a motorcraft filter. Bought two cases at Pep Boys and will buy another two before the end of the year. Can't beat getting Mobil 1 at 2.50 a quart.

 

I am close to my first oil change, and figured it was time to do a little more research on the Mobil 1 product. I found some conflicts. The 2005 Mustang Owners Manual states:

"To protect your engine’s warranty use Motorcraft SAE 5W-20 or an equivalent 5W-20 oil meeting Ford specification WSS-M2C930-A."

I'm okay with the equivalency clause, however I'm not sure that Mobil 1 meets the Ford specification. Here is an excerpt from the Mobil website:

"Mobil 1 with SuperSyn 0W20 is engineered specifically for Ford, Honda and any other vehicle where a 0W-20 or 5W-20 engine oil is recommended. Mobil 1 with SuperSyn 0W-20 exceeds API SL/CF, ILSAC GF-3, and the performance requirements Ford WSS-M2C-153H specification. "

Here is what I am having trouble with. The specification numbers don't match up, and the Mobil conformance statement indicates that the product meets the "performance requirements" of the specification. Even taking the leap that the specifications are the same, are there other specification requirements, and does Mobil 1 meet those ? I am so on the fence. I want to use the synthetic to gain long engine life .. on the other hand I don't want to mess with the Ford warranty.

Anybody have additional information about Mobil 1 meeting the Ford specifications for the new Mustang engines ? [/b][/quote]
I did a little digging on BobIsTheOilGuy.com (one of the best sources for motor oil info on the web) and it appears that WSS-M2C-153H has been superceded by WSS-M2C930-A. They are essentially the same the spec with WSS-M2C930-A spec adding ILSAC GF-4 rating (Mobil 1 is GF-3). I'm not an oil expert so someone jump in and correct if I'm wrong but I think GF-4 deals mainly with improving fuel economy and emissions and doesn't have anything to do with the wear characteristics.

 

TomServo, thanks for looking up that spec, researching the differences, and for providing a new source of information for me. That site looks great.