Can that rust be prevented if a person is proactive with anti-rust maintenance?I've been using SuperTech/Tech 2000 for over 25 years. Here, in the rust belt, the engine will outlive the body 99% of the time. Two weeks ago, I drove my dad's minivan due to the wrecker, it was an '06 Uplander 3.5L. For the the last 15 years or so, it's had nothing but jobber tier oil filters and bulk oil based on the OLM. Further, any time I've serviced it, it got SuperTech conventional.