I have 100% sythetic motor oil (Amsoil) in my pony.

Can I driver 10K mile w/o a change ?

I do mostly do city driving - my daily driver.

 

Iv'e done it for 20 years. Mobil 1 makes a 15,000 Synthetic, that's what I use (but I change filters @ 5000 and oil at 10,000).

 

http://neptune.spacebears.com/cars/stories/mobil1.html

 

Do what the bottle says. I mean, they make the oil. It's in their interest not to tell you to go LONGER without an oil change, because they don't make any many if you don't buy more oil. So if they say 15k miles, chances are it's not 10k. Savvy?

 

Mobil make a 15k oil (Mobil 1 Extended Service) , but it does not bare the API starburst label required for this car. If you run it at all, it can / will foreshorten the service life of your emissions as it has additives that exceed the current requirement and are harmful to your emissions devices. Mobil I can probably run to 12k and I have done that on all my vehicles, but I change the oil filter at 3k to 4 k intervals and top up. Mobil claims the Extended service filter is good for 15k. I use it, but change it just the same for piece of mind.

 

It also depends on how quick you put the miles on.
For me 15K could be years.
I think you should change it at least every 6 months or so to remove contaminants.

 

Excuse me RadBoss, and with all due respect, but I'm afraid I've got to disagree with you here. When I read your post it got me curious so I went out to the garage and grabbed a fresh 5qt jug of Mobil One Extended Performance. At least in the case of Mobil One EP 5W30 there is an API Starburst label on the front of my jug:


The starburst reads: "American Petroleum Institute certified for Gasoline Engines".

Just to be sure I checked on the back of the jug and found an API donut:


The Donut reads: API Service SM/CF - Energy Conserving - and the center reads SAE 5-30.

According to the API web site the listed service catagory SM reads: "For all automotive engines currently in use. Introduced in 2004, SM oils are designed to provide
specification and/or qualify as Energy Conserving."

http://www.api.org/certifications/en...lGuide2006.pdf

 

You will be fine at 10,000 miles with the Amsoil. Just use the Motorcraft filter, or Amsoil's filter if you want to pony up some more $$. (not necessarily any better, and I have the used oil analysis' to prove it).

 

Changing your oil regularly is cheap insurance. I wouldn't go over 7,500 without changing the fluid. That's just me.

 

You can go 10,000 miles easily, you need to run a high capacity filter like the Mobil 1 filter. Synthetic oil last longer but still gets dirty-that why you need the upgraded filter.

 

Prior to my Mustang I had a BMW Z4. BMW does not specify an arbitrary mileage interval. The ECU calculates when the oil should be changed based on your specific driving conditions. In my case the computer told me to change it at around 11,500 miles. This was based on mainly city driving: 6 miles each way to work and home with occasional diversions to Laguna Seca and Buttonwillow raceways. BMW uses Castrol synthetic.

 

Noted.

Well then they have changed it and I would say that is a fairly recent development. Last time (a year ago) I visited the Mobil web site, that product across all viscoties was devoid of the API starburst.

I would note though that from the Mobil web site "Appropriate viscosities of Mobil 1 Extended Performance also meet all the requirements for GF-4." Note the active word there, "appropriate" ... which means not all grades of Mobil Extended service meet G4.

 

Which Amsoil are you using?

I run the 7500 mile Amsoil oil (5W20) in my Mustang and change it once a year - I only accumulate around 3K on it in that time.

My Pontiac with 200K miles on it gets the 25K mile oil (10W30). I put about 15 K per year on it. I try to change it once a year.

 

I use the 7500 mile Amsoil 5W20 with the Amsoil oil filter.

The Amsoil oil filter is rated for 12K miles I believe.

So I believe that a 10K mile change period is OK for me.

Actually the Amsoil oil filter is rated for 25K miles: https://www.amsoil.com/storefront/eao.aspx

 

Completely agree, and this is the regimine I follow as well. Remember it is more important to use a decent filter and to change it regularly than change the oil. Any true synthetic oil should last at least 10k miles.

 

I run Mobile 1
and change my oil every 3,000 miles... What a waste?
But it makes me feel like I'm doing something important.
Kinda like recycling paper... complete waste of time and resources but it makes us feel better.

 

US???? Do you have a mouse in your pocket?....lol
Without trying to be a complete jerk about this, I'd suggest you read the webpage Glenn posted above.

I'm not going to get into the recycling issues.

 

1. I recycle my oil! As used oil IS disasterous for the environment.
2. Other than metals... Copper and Aluminum, recycling (the kind you do in the green bin that you put out in front of your home) is a complete waste of time and resources. It costs much more time, money, resources and is actually worse for the environment than putting it in a landfill.- that's a cold hard fact.

 

Could you please show some sources for this logic? Not doubting you, just wanting a better understanding of why you are going against the grain on this one.