I used to tug race 6-seven situations a night.i dont have an oil cooler and my previous oils lasted only 300miles max until finally they turned h2o like.this lasts 1.5k miles with my driving.the 20w50 which really does not have the w..it can be 2050. it functions just like a https://smedleyf462ade8.thecomputerwiki.com/user