If you have a book for your A look up what they say to use and think about it. If my memory is right it was 30w and now the same oil would be a 40w oil. The oil you are using in it is for a diesel built after 2002 a lot different than a 60 year old engine was designed to run on. I have a 76 model diesel from overseas and 15w40 will run about 10 min and no oil pressure changed to a strait 40w diesel and now it holds 40 psi all day long. Oil aint oil anymore. Bandit
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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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