Hello everyone thank you for all your responses. I don’t know if anyone on here is familiar with 504 rat he does oil testing and states that Quaker State is one of the top oils. He too suggested 5w30 not 0w20. He also stated that 5w30 will give me a small 1-3% boost in horsepower maybe up to 5% over 0w20? How is this possible ? Wouldn’t thicker oil cause the pump to work harder? Logically I would think that a thinner oil would cool down faster and offer more horsepower at the expense of less wear protection.