OK I'm pretty confused about all the different OCI's people swear by on here. I've seen everything from 2k-20k oci's. I'm Asking what you as the oil guru's that you are what do you think would be the best OCI for my car. A little background 3-4k OCI's all its life driven and maintained by my grandma never saw over 4k rpms. 122k when I got the car. I changed it right away with GTX and a purolator filter. at about 124k i put in 16oz of MMO. At 125k I changed it with some M1 10w-30(always had this weight) and a purolator filter. Now I am a little more spirited in my driving than she was. I also idle in traffic a good bit. But I keep up with the car very well and the cooling system is perfect so it runs cool. I drive about 250 miles a week. So with the little background info what do you think would be the best OCI for my car?