I had a non leaking engine turn into a leaker half way into the change interval after switching to HM oil.. Has nothing to do with being proactive, that's what changing oil on a regular basis is all about. However some aren't happy unless their engine has problems.It amazes me that some want to see leaks before useing a HM oil. Be proactive! Use HM oils to hopefully prevent leaks before they start. Keep the seals conditioned all the time instead of trying to reverse seal shrinkage once it has began.
SuperTech HM synthetic is a fantastic oil at a rock bottom price. No need to overpay for anything.