It's true :)
Most people step up to thicker grades because their engines tend to burn/consume less, however, the thicker you go, the more damage you do during cold start up :doh:
It's actually better to continue using a thin grade and add when needed :meh:
It's all I use in my rig :grinpimp:
I usually change every 3k miles (about every 3-4 weeks) except for Blackstone samples which I let run much longer....
In fact, I'm letting this sample go for 10k miles (when she rolls 200,000) :)
Here's a link to my reports, which also shows...