Back to the original topic. I changed my oil in my corolla. 3 quarts Pennzoil 5w30, 1.5 quarts Pennzoil Platinum 5w30. Changed out the manual transmission fluid with Coastal 75W-90, once I hit 15-20K on the car will drain it out and put in amsoil transmission fluid and will likely forget about it till i get to 100K and change it out again maybe.