Ive been using purolator pure one for my nissan titan for about 3000 miles now. Every 3000 miles, i will be getting a free genuine oil filter from nissan dealership. I say "free" because i will be wasting my money to buy pure1's and i guess just stock up on these extra nissan filters. I was wondering how good are these nissan filters? It says it's made in japan but i doubt that would make any difference. Thanks for any feedbacks.