I used to pull race six-7 occasions an evening.i dont have an oil cooler and my preceding oils lasted only 300miles max until eventually they became h2o like.this lasts one.5k miles with my driving.the 20w50 which basically doesn't have the w..it's 2050. it functions similar to a 50 when its https://elevemotors.com/product/jdm-engine-4age-blacktop-for-sale/