bought the wife a 2011 GT for Christmas and was wondering what peoples thoughts were on Mobile One was. I have it in my other vehicles and it works great. Do you think it would be a good idea to put it in the 5.0. It has just under 300 miles.

 

As long as the oil meets the Ford specs, there is no problem. If choosing Mobile One for the longer change intervals......it would be worth the money in the long run. If you change it per the Ford manual, you most likely will spend more for about the same protection.

I would wait until the first normal change to put it in.

Myself, I will just use the normal Ford products as they will be doing my changes for some time.......

 

My thought is that it is Mobil 1...

I run it, it is a proven product and wally world has it relatively cheap.

I wouldn't change it with only 300 on the clock, wait until your first regular oil change.

 

My 5.0 just turned 6000 miles, over 95% are interstate miles at 75, as we live outside of the city. I changed my oil and filter at 3000 miles as I normally do with a new car and used Mobil 1. In 3000 miles not a drop of oil used. I also use it in my wife's VW Passat 2.0 Turbo.

I have been using Mobil 1 since 1978, to include three years in a 5.0, 1979 Mustang Cobra, in Germany, from '79 to '82. I drove it on a daily basis back and forth to Rhein-Main AB, as well as various trips in Germany, for a little over 40,000 miles. No problems at all. I have been using it in every car since then.

 

I run Mobil 1 in most of my cars, and have for the past 20+ years, but I'm running the Motorcraft semi-synthetic oil in my Mustang until it is out of warranty. Changing Mobil 1 at the factory time-based intervals (it would be about every 2-4k miles for me) is a waste of money and oil IMHO, and I don't want to get any hassle from the dealership if there is a problem with the engine and they discover I only change the oil once every 2-3 years because I'm going with Mobil 1 and extended drain intervals (I don't put a lot of miles on my Mustang). As soon as the warranty is up though, I'll be switching to Mobil 1.

 

I would wait there have been a couple of threads on here when the factory oil has been changed too soon the engine starts ticking. It seems ford has put some sort of synthetic additive to the factory oil to help seat the parts on break in. I believe the fix for one of the members on here was a ford rep came out to his service department with a mysterious small bottle of something poured into the oil and within 5 mins there was no ticking.

I was going to change my oil before storage but I only have 1250 miles on the car and after hearing that story I will wait till around 2k - 2.5k to change it.

 

I remember the loud ticking noise thread and I believe the contents of the mystery bottle was graphite. I just had my first oil change done and used penzoil ultra 5w20. Basically I think you can't go wrong with any of the major synthetic brands that have the proper ford certs. Now you have oils like castrol edge which claim to be " 8x better wear protection then mobil". So it gets confusing, and now mobil has the extended interval oils along with their original formula.

 

if your going to change your oil to often ( before 4k miles) just go with the ford part syn stuff<----good for 7k miles or so. If your going to go once a year or over 7k between changes I would use the mobil one or better.

 

I've always ran Royal Purple in my vehicles. Works well for me and I don't see a reason to change to anything else. I'd wait a bit longer to change your oil though, considering the car only has 300 miles on it...

 

You probably don't really "need" Mobil 1, but IMHO it is worth the extra money, I use it in all my vehicles -- even the Toyota Camry -- as "cheap insurance."

Yeah it costs a little more; but in the scheme of things an extra $20 two or three times a year is just a drop in the bucket.

 

not to be too pedantic, but the US definition of synthetic is different than the rest of the world.

this is because in the late 1990s, Castrol started selling an oil made from Group III base oil and called it SynTec Full Synthetic. Mobil sued Castrol, asserting that this oil was not synthetic, but simply a highly refined petroleum oil, and therefore it was false advertising to call it synthetic. In 1999, Mobil lost their lawsuit. It was decided that the word "synthetic" was a marketing term and referred to properties, not to production methods or ingredients. Castrol continues to make SynTec out of Group III base oils, that is highly purified mineral oil or dino/petroleum oil.

so after that decision, most oil companies started using the much cheaper Group III base stock and calling it full synthetic, at least in the US.

historically synthetic oils were defined as being made from Group IV base stock, and this is still true outside the US. so if you get euro Mobil 1 or German Castrol you can be assured your "full synthetic" oil really is synthetic.

is US Mobil 1 made from Group IV base stock? no one is entirely sure and exxon/mobil isn't telling. but i, for one, would not be surprised if exxon/mobil decided to use Group III in US Mobil 1 for the higher margins.

does this affect performance? certainly not for most people. Mobil 1 still provides long lasting protection for your engine as long as you use the right grade. you can probably go 10k-12k miles or 1 year between changes depending on how hard you are on your engine.

if you want "real" synthetic in the US i know that amsoil markets their oil as fully made from Group IV base stock (most companies' oil is 93% base stock and 7% proprietary additives).

 

I've run Mobil1 on two of my Mustangs without issue.

Unfortunately I'm stuck on the Motorcraft 5w50 for my GT500 for now..

 

I was involved in a sales seminar a couple of years back and at that time was assured that the Mobil 1 was a "pure" synthetic unlike Royal Purple that was based on mineral/dino base stocks. This was from an oil industry marketing rep so take it or leave it as you will. I take it as truth myself.

 

Amsoil is indeed 100% synthetic polyalphaolefin (synthetic) base stock.

 

i want to add that Group IV base stock oils are not considered ideal for break in periods.

 

I use Royal Purple in high-performance cars and Mobil 1 in everything else.

 

Maybe you should read the " tick" thread on AFM !

http://www.allfordmustangs.com/forum...warmed-up.html

 

Good post! Good to know, thanks.

 

Why is that? I was actually going to do the first oil change this weekend with Mobil 1! Ironic, as we don't know if it truly is Group IV

 

I had read that that the group IV base might be too efficient for break in. I'm not sure if I understand that claim, but my thought is that it doesn't provide enough friction for the various internals to set. Maybe in reference to piston rings?