Truck = F150 2000 4.2. I changed to Mobil 1 on first oil change @ 5,000 miles. Manual calls for next oil change @ 10,000 miles. Since I am using synthetic, can I go longer than factory specifications. If so, how how many miles is ok.

TIA

 

I just bought a 99 Ford F150.... With 23K miles..... It has been garage Kept for 6months.....

I just changed the oil + Filter.... and poured im my favorite Motor Oil... Mobil 1 10w-30 for Summer.... Which I have always Used Mobil 1....

I change mine 2 times a year.... I dont worry about Miles....
Once before Winter.... Once before Summer....

During those times.... I change the Filter.... and add 1 qt...
every 2k miles.... Very cheap insurance...

Never have I had any engine problems... Never...
This is My Method...

 

Being that the truck is under warranty, it is a good idea to stick to the schedule supplied in your manual. Just my .02 cents

 

The language in the extended protection plan was written by an insurance company, and is definitely intended to intimidate you into changing your oil every 3,000 miles. They are doing everything they can to try to limit their liability for claims and create “wiggle” room. What’s new!

Ironically, in Europe the auto manufacturers recommended drain intervals are from 12,000-18,000 miles using petroleum products, and are moving even higher. In the U.S., it has been published that auto manufacturers are also going to be moving toward extended drain intervals of up to 15,000 miles in the not too distant future. G.M. is currently moving toward a system that tells you when to change your oil based upon a computer program that evaluates your driving habits. Some other car companies are planning on having an on-board oil analyzer to tell you when to change your oil.


All of the vehicle OEMs in the U.S. have agreed that a warranty cannot be denied because a customer was using any brand of motor oil at any length drain interval unless an engine failure was directly attributable to the oil or drain interval. For example, if your radio, power steering unit, air conditioner, etc., broke down, they could not void the warranty that covers those items because you were changing your engine oil at 6,500 miles or one year. If it is not an oil related failure, they cannot void the warranty. The law supports this position.


Hope this helps. Good Luck

 

hey ruger-dfw,

What law are you referring to about warranties?

 

I've been using Mobil 1 5w-30 in Spring/Summer/Fall and 0w-30 in Winter and Mobil 1 oil filters since my truck was new. I change my oil and filter every 5000-10000 miles, depending on how much trailering I do during that time-span. I've got 58,000 miles on it and it runs great, no problems of any kind. My motor is also a 5.4 Windsor built before Spring of 99 and it's a slapper... The Mobil 1, especially the 0w-30 reduces the cold piston-slapping noise a ton, in fact the noise is barely perceptable using the 0w-30.

If you tow, change it every 5k during your towing 'season'. If not I'd go 10k and feel comfortable. Just use a high-end filter like Mobil-1, K&N or something like that.

MILLIMAR brings up a good solution as well... I'll think about that one and see if makes sense for me. I do tow a lot, in all seasons, so I need to look at that a little closer. Sound's like he's got a good potential plan though.

Read about some folks in the past using Amsoil and running 15,000-25,000 miles on it ! Don't think I would go that route, especially if you're still under warranty, but people are doing it and they have no problems either. To me it's just easier to get Mobil-1 since it's right on the store shelf and I personally believe that an oil change is an under-rated event you can do to your vehicle...

 

Thanks RonHop.... It works perfect for my Trucks...
I Didn't mention...

I run 10w-30 in the Summer...
5w-30 or 0w-30 in the Winter... Both work great...

 

Hello Ford Fans,

Here is the recipe I use in my gasoline engine trucks. I use 10w30 Amsoil and Amsoil's SDF filter and change both on 10,000 mile intervals. The 10, 20, 30, etc., thousand mile marks on the odometer is an easy way to remember. I also rotate the tires on this schedule as well. It works good for me.

 

Deep6blue:
The law you were wondering about is the magnuson-moss warranty act. In the simplest terms, it limits the manufacturer's ability to disclaim warranty. Thus, they cannot force you to go to the dealer for oil changes or purchase their products (oil, filter, etc.). Further, they cannot disclaim warranty due to unrelated modification, i.e. refusing to fix your broken starter because you installed an aftermarket exhaust.

 

I have been using Amsoil 0w-30 and 5w-30 for my Expy and just switched from Mobil1 in my Honda CR-V... I change the Amsoil about twice a year in the Expy (25K per year). I will change the Honda probably once a year (7K per year). I use the Amsoil SDF on both. Much cheaper than using other brands and changing them more frequently.
When towing 5,000 pounds for long distances ( 3hours) I usually make sure I have less than 10K on the oil. I might change the filter and add a quart for protection. VERY stressful on the engine when towing!

BTW: I have NO problems finding Amsoil in my area. Buy it over the counter ALL the time for the same price as online!

 

Thanks KGL