Dan: I am running the JD 50 Plus 0W40 in my diesel engines. I am 100 per cent happy. I have also sent the oil in to blackstone labs after I taken it out, and the results are great. I have it in my 88 F-50 7.3, my JD 4400. I also run it in my little 318. The 7.3 which is a bit hard to start cranks much better with the 0W40 than the Rotella 15W40. The 0W is thinner when it is cold, yet when hot is the same as the 15W40. As you know, you should not run Regular Mobile 1 in your diesel engines. I run that in my Oldsmobile intrigue (186k miles).
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Today's Featured Article - Earthmaster Project Progress Just a little update on my Earthmaster......it's back from the dead! I pulled the head, and soaked the stuck valves with mystery oil overnight, re-installed the head, and bingo, the compression returned. But alas, my carb foiled me again, it would fire a second then flood out. After numerous dead ends for a replacement carb, I went to work fixing mine.I soldered new floats on the float arm, they came from an old motorcycle carb, replaced the packing on the throttle shaft with o-rings, cut new ga
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