I used to tug race 6-seven occasions an evening.i dont have an oil cooler and my former oils lasted only 300miles max until eventually they grew to become drinking water like.this lasts one.5k miles with my driving.the 20w50 which essentially does not have the w..it is actually 2050. it acts https://elevemotors.com/product/jdm-subaru-ej20-turbo-engine-for-sale/