I guess that's why I believed that Pennzoil Edge was a new product, when in fact it's been around for a while; I haven't seen it in the Canadian Tire stores I've been to.
As I've said though, I haven't had a problem with PP after 100000 km with 14000 km intervals. So no reason to change. I will say this though, when I compared an RSX of similar age on a diet of non-synthetics with mine, the difference in engine cleanliness when you shine a flashlight into the oil cap opening was huge. Mine has absolutely no varnish or deposits on or around the camshafts or along areas engine oil tends to cling on to (edges, flat areas etc.).
Regards,
Andrew