Since I started using Mobil 1 in 1978, I shouldn't need to tell you what I recommend. I do all my own oil changes too, and since we have four vehicles, it can keep me busy. It gives you a chance to look under the vehicle and see what's going on, and what may need attention. Many of your local parts places will also take your old motor oil, so you can dispose of it safely.
Just make sure the oil you use is rated for diesel use!
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