I'm an AMSOIL Dealer and I've been using 25,000 mile/one year drain intervals for close to 30 years with absolute success. :thumbup: This has saved me a ton of money in unneeded oil changes. AMSOIL has offered 25,000 mile/one year drain intervals ever since 1972, over 40 years ago and millions of miles traveled with outstanding results. It's old hat now. So it's not about faith as it is about science. :yes: Between reduced oil change costs and improved fuel economy, AMSOIL synthetics have saved me thousands of dollars. Longer lasting engines that run better/quieter, provide more power/better throttle response, reduced emissions, an internally cleaner engine, much easier cold winter engine starts, improved lubrication/reduced wear, superior high temperature engine protection, the convenience and time savings of only needing to change oil every 25,000 miles/one year and a made in U.S.A. product are just icing on the cake, regardless of what drain interval someone feels comfortable using. Thousands of laboratory oil analysis reports validate the 25,000 mile/one year drain interval for AMSOIL Signature Series synthetic motor oils. I also offer standard drain interval synthetic motor oils and also a 10,000 mile/six month synthetic motor oil. So whatever your drain interval, I can help you out.
Here are the three AMSOIL synthetic motor oils in the 0W-20 viscosity that the 2014 Corolla uses -
Signature Series synthetic 0W-20, 25,000 miles/one year -
http://www.amsoil.com/shop/find/product/asm?zo=349698
XL Extended Life synthetic 0W-20, 10,000 miles/six months -
http://www.amsoil.com/shop/find/product/xlz?zo=349698
OE synthetic 0W-20, standard drain intervals -
http://www.amsoil.com/shop/find/product/oez?zo=349698
For all Corolla Forum members I offer wholesale prices on the entire line of AMSOIL synthetic lubricants with an AMSOIL Preferred Customer membership, which are the same prices I pay as a Dealer, so I will get you the guaranteed lowest prices anywhere. These prices are 25-30% lower than retail prices.
Below are links to the three-part 409,000 mile oil drain video, (about 6-7 minutes each). This is an older video now, but you will get to see the internal engine parts of an engine that went 409,000 miles without an oil change using AMSOIL synthetic motor oils. As they say, seeing is believing. Enjoy. :thumbup1:
Part 1 -
Part 2 -
Part 3 -