Welcome to the Corolla Forum!
The Toyota Corolla doesn't have a European engine, but a Japanese engine, so European oil would not be appropriate for a Corolla.
What year is your Corolla?
I firmly believe that AMSOIL synthetic motor oils are the finest motor oils in the world, bar none, (many automotive experts agree). I'm an AMSOIL Dealer so some might think my opinion biased, however if I didn't truly think AMSOIL is the best, I wouldn't even
be an AMSOIL Dealer.
For Corolla Forum members I can get wholesale prices for you with a Preferred Customer membership, with prices that are
lower than competing brands of synthetic motor oils. So send me a message with your needs and I will take care of you!
Below are some very interesting links I think you might like.
A Study of 5W-30 Synthetic Motor Oils - AMSOIL, "The First in Synthetics" (TM), Castrol Edge (R) With Titanium Fluid Strength Technology (R), Lucas Synthetic, Mobil 1 (TM) Extended Performance, Petro-Canada SUPREME Synthetic (TM), Quaker State Ultimate Durability (TM), Red Line High Performance Motor Oil, Royal Purple High Performance Motor Oil, Valvoline Synpower (TM) Full Synthetic Motor Oil, which is the best? Aren't all motor oils the same? Isn't oil just oil? To discover the truth, see the results of the study that subject all these motor oils to a battery of SAE and ASTM oil industry tests at the below link -
http://www.amsoil.com/lit/G3115.pdf?zo=349698
AMSOIL Signature Series 5W-30 Synthetic Motor Oil Product Description -
http://www.amsoil.com/shop/find/product/asl?zo=349698
Request A Free AMSOIL Catalog -
http://www.amsoil.com/AmsoilLogin/LeadsModalLander.aspx?type=catalog&zo=349698
Synthetic Oil Basics from http://www.HiTechOil.com - How and why are AMSOIL synthetic motor oils the best?
Cab Fleet Test Results Using AMSOIL from http://www.HiTechOil.com - This fleet of cabs saved thousands of dollars by using AMSOIL synthetic motor oils -