How long does synthetic oil last?

by Yahoo-News-Synthetic-Oil

{ 3 comments… read them below or add one }

Lorien October 29, 2010 at 1:50 pm

There is a lot of debate over the oil change interval, which is now up to 15,000. First there is no argument that a synthetic oil can run longer between oil changes. But how long do you keep a synthetic in you engine, there is no simple answer but if you ask me (and i do this for a living) i’ll tell you 6,000miles. while letting your oil go too long can do serious damage, you can’t hurt your motor by changing oil frequently. Regardless of how often you change oil you should check its level and top it off with every fill up.

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Larry April 4, 2011 at 10:22 am

I only drive my 2004 Chevrolet Silverado V6 about 3000 miles a year. I have been using Mobil 1 5W30 and changing oil once a year. Is this necessary or will the synthetic oil last longer since the miles are so low?

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AMSOIL Synthetic Motor Oil Dealer April 4, 2011 at 11:16 am

If you’re not using the MObil 1 Extended Performance product, that might actually be too lengthy of an oil change. Vehicles that sit for long periods or only drive very short distances are VERY hard on oils because of the condensation build-up that occurs in the crankcase – which leads to acid build-up. If you want to know for sure, you should consider doing an oil analysis at 6 months and again at a year to see just how the oil is holding up. You MAY find that you can go the full year. You MAY find you can go ever longer, although this is highly unlikely. More likely, you’ll find that the oil is ready for a change between 6 and 9 months with the standard Mobil 1 synthetic oil.

An oil analysis runs about $20 – $25 depending upon who you get it from and how much data you need. In the short run, it will be more costly, but, in the long run it will help you to know just how long/short your oil drain intervals should really be.

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