RLSH, absolutely. I've never gone longer the mfgr says. And until recently, I never went past 3. The research I've done indicates doing @ 3 is just wasting $.

I've had two cars that lasted over 230K one I gave to a friend who killed it (Camry...that had to be changed every 3k cause it was actually burning and a car that old isn't getting new rings) and a Subaru approx 240K (went into a entrance ramp a little hot on a rainy night...when you're in it....you're in it).

I would certainly never go longer than what is stated, and I don't rag my cars out....from time to time I'll clean the carbon deposits out and take the tach up a bit...but for the most part, I'm a low rev, easy going shifter....

I just can't get over the oil weight 5w20....