Quote:
Originally Posted by Ashiu
Would you drink 3/4 of a beer and dump the rest before grabbing your next? Basically if the additives haven't worn down past acceptable levels you are just wasting money. Maybe not a huge deal for cars that take 5 or less qts of oil. However when you need 7qts like that car does, your looking at about $60 each change doing it yourself. 13 years later it adds up to a nice amount. However I'm a full time tech, and after working on people's cars all day. The last thing I want to do is non modification maintenance to my car 
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So its essentially just time/money. That's an easy trade for me, maybe I do 1 or 2 extra oil changes every 20k miles but I never have to worry about oil life. I am ok with that