I used to pull race six-7 times an evening.i dont have an oil cooler and my earlier oils lasted only 300miles max until finally they became water like.this lasts one.5k miles with my driving.the 20w50 which in fact doesn't have the w..it can be 2050. it acts like a 50 https://elevemotors.com/product/jdm-honda-s2000-f20c-engine-for-sale/