Hello, a bit of background on this used motor oil. It sat in a motorhome for over 500 days with maybe moving it a couple times around the lot. The motor had a new EGR valve put in, full DPF clean out due to excessive soot, new turbo, and a new fuel filter as well roughly a year ago. They did not change the sampled oil after the work. It now runs and makes power fine it seems and doesn't make any odd or weird noises. Sampled oil use time is unknown other than it was in there a long time. Motor has 52,000miles
Could this be due to rust building up inside the motor during the extended period of non use? Or is this reflective of the work done on it? Is it soot? I don't know.
Could this be due to rust building up inside the motor during the extended period of non use? Or is this reflective of the work done on it? Is it soot? I don't know.
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