I used to tug race 6-seven situations a night.i dont have an oil cooler and my earlier oils lasted only 300miles max until they grew to become h2o like.this lasts one.5k miles with my driving.the 20w50 which truly does not have the w..it can be 2050. it functions just like https://jdmmitsubishioutlander4b141047.wikilinksnews.com/5416395/5_simple_statements_about_rb26_motor_explained