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2026. 6. 30. 작업
난이도 & 준비물
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proper oil for 1940's era aluminum ford engine
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Per @Eric Urban's suggestion, I found the Technical Manual for the M4A3 tank published in 1942. That tank did use the aluminum Ford GAA 18L V8 engine which produces 500 hp at 2600 RPM! It says: Capacity: 32 Quarts Above 32°: SAE 30 32° to 10°: SAE 30 or 10 10° to -10°: SAE 10 Below -10° : Not Listed Replace the oil every 50 hours or 500 miles on dirt roads or 1000 miles on paved roads. (These are miles in a tank .) Clean the oil filter every 1000 miles. I believe @user23543 has a point that oil formulations have changed over the years. In 1942, the SAE J300 standard was much different. It was only concerned with one viscosity and tested that in a much different way than today. They used a different test apparatus and different temperatures. Some say, "the minimum standards for each grade have only become more demanding [over the years]" . That's a good general rule, but it's not that simple. SAE J300 started out measuring just one viscosity of the oil with a "crude" apparatus. Nowadays
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