We bought this diesel, our first, about 16 months ago. Had the oil analysis done right after we bought it. All numbers were good. A few months latter talking with a good friend who has had lots of heavy equipment for a long time. He swears by Lucas, so I bought a couple of gallons and added it every time I filled up.
A few months later, I attended a Spartan training seminar......they say, not necessary, you are wasting your money. In Dec I had another oil analysis, not as good as the first one, the only thing different was the Lucas. Enough said, I stopped the Lucas, changed the oil, drove it 4K miles and retested the oil. Nice clean numbers again.
2007 Newmar KSDP. 3912
2010 Nissan Frontier SE