That is true!! "Lifetime" is a totally irrevelant term when it comes to a car. SN rated oils and the LL spec means you are using an excellent oil but I wouldn't approach 15k without UOA's to back it up and even then I'd be cautious with a stock filter. 10k with a TBN of 1.5 or better and low TAN would be my limit. Otherwise I couldn't sleep at night
