I used to tug race 6-seven occasions an evening.i dont have an oil cooler and my previous oils lasted only 300miles max until finally they grew to become water like.this lasts one.5k miles with my driving.the 20w50 which actually doesn't have the w..it can be 2050. it acts similar to https://brooksxlxzp.wikicarrier.com/68471/the_best_side_of_13b_twin_turbo_engine_for_sale