How you know that RL is better for your engine than what manufacturer recommends? RL Performance is best suited for track use and shorter OCI. So yeah, if you track your car and use it on daily basis, sure. If not, you really do not know if RL is any better than your usual suspect in Wal Mart shelfs.Thanks. I think when you take into account what I spent on the car, about $24k, spending $120 a year on two oil changes isn't going to cause me any concerns....what will cause me concerns is if I'm damaging my car in anyway. As they say, engines are expensive and oil is cheap. I have used conventional oil in a 2001 civic that went 250k miles (~7500 mile OCI)...sold it for $2500 and the engine was in perfect condition. So you are right, the engines will outlive me even if I used the cheapest synthetic or even conventional. I just wanted to use RL to see if it would clean out the piston rings (if that is what is the cause of my increased oil burning).