how many miles can your car go on synthetic oil?

Answer 1

First of all, you should follow your owners manual, regardless of what oil you use. Doing otherwise risks the warranty coverage.

Oil manufacturers claim all sorts of silly things for synthetics. First, as to the question of how many miles you can get from them, it depends on your car and your filter. The only way you can possibly know is to periodically take oil samples and send them out for analysis. At $20 per analysis, you will quickly exceed the savings from long running. If you simply believe the incredible hype of synthetic oil manufacturers, and simply run 15-20K miles without periodic testing, your engine will eventually pay the price. This is because the principal reason to change oil is to remove soot and wear elements, which continue to build regardless of what lubricant you use.

As to these being better lubricants, better is a question of what you measure. They are terrific in very cold weather, because they flow well in extremely cold temperatures (they were originally developed for military jets in arctic climates.) They are more resistant to breaking down (which is why long change intervals are even possible), which makes them very good for race cars and airplanes. For street cars, you can get high mileage, but it's wise to protect yourself with diligent testing.

But while they flow quickly, they don't cling well. And because of their low molecular weight, they can leak through gaskets that would seal rgular petroleum oils. If your application uses any rawhide seals, synthetics will pass right through as if the seal wasn't there. All in all, it's hard to see a clear gain.

Answer 2

theoretically you could go a ton of miles but warranty claims dont care if you had synthetic oil or conventional it all has to be changed at the manufacturer recommendations or the warranty will no be covered. People are funny about this topic there is no truth about the myth about not going back and forth from synthetic and conventional. You could switch every time you change your oil. Plus synthetic oils still have additives that are designed to trap dirt and they still get worn out the same time as conventional oil. do what you want but it is a waste of money.

Answer 3

I use the full synthetic oil. Not the blend. The whole thing about
the natural oil is that it breaks down after dealing with prolonged exposure
to high heat. Syn oil doesn't break down and as long as you keep it clean
then it's ok....

Up to a point.... I change my oil just once a year but I change the filters 3 times a year. I do a LOT of driving. about 20 thousand miles per year.
For me, it's actualy better for the engine, and cheaper than changing the oil
with the cheap stuff like jiffy lube. Jiffy lube wants you to change the oil every 2 or 3 thousand miles because the stuff they use is the WORST oil there is.

oh, and don't use oil additives. they break down and increase with viscosity and are worse when you start your engine cause they don't stick to the metal like oil is supposed to.

no matter what the advertisement says... DO NOT use additives.

tom

Answer 4

Depends on the make of the car. Synthetic oil will last 2 to 3 times longer than regular oil. Once you switch, you cannot go back so make sure you know what you are doing.

Answer 5

You can pull 6,000 but you should at least change the oil filter at 3,000.