Oil Change Interval
I own a 2015 Toyota Sienna van. The warranty is almost up. My question has to do with the oil change interval shown in the maintenance manual. It stipulates a 6 month/5k miles interval between changes...
Forum Discussion
amxpress wrote:
To answer your question, yes, there is an oil that offers an extended drain interval.
Amsoil makes extended drain synthetic motor oil, and their top of the line 0W20 has a 25,000 mile change interval, or once a year, though many will condemn this.
Amsoil Signature Series Synthetic Motor Oil
There is nothing wrong with going with a 10,000 mile oil change using a true synthetic like Amsoil or Mobil1; along with their oil filter.
I find Amsoil to be mostly fooey. If Amsoil was the 'holy grail' of lubricants, everyone would use it. It's not. Amsoil, Lucas, Golden Spectro, all are mostly advertising hype. Oil don't 'wear out', the additive package gets depleted and it gets loaded with contaminants.
Train engines (Diesel train) don't ever change the oil. They pump it out, centrifuge it, add in the correct additives and pump it back in. Same oil stays with the engine for it's lifetime.
The best and most logical method is spectroscopic analysis at the OEM recommended change interval. That will baseline the projected oil life and then (and only then) can you extend the change interval. Any other way is a crapshoot.
Only costs 25 bucks to find out for sure. Blackstone Labs in Fort Wayne does it and so do other labs across the country. 25 bucks. Cheap date.
