I used to tug race six-7 moments an evening.i dont have an oil cooler and my preceding oils lasted only 300miles max until finally they turned water like.this lasts 1.5k miles with my driving.the 20w50 which actually does not have the w..it is 2050. it functions just like a 50 https://israelanbnt.wikibyby.com/848485/what_does_13b_renesis_engine_for_sale_mean