Posted by bkpigs on December 13, 2010 at 05:27:31 from (67.43.117.220):
I usually use Valvoline for my tractors but the letter series need a bit thicker oil that Valvoline carries. My 300 and dad"s 300U I use 10W-30 all year long and have plenty of oil pressure. But the A and B when warm will have little oil pressure at idle so I want to use 15W-40. At Wally World could not find Valvoline at that grade but did find Supertech. I was trying to compare the ratings but it may as well have been in Chinese. I figure it has to be as good or better than what the tractors have ran on when they were new so I went for it. So my questions are:
1. Can someone make sense of the specs. ratings for me (CJ-4 and all of those)?
2. Is Supertech a decent grade oil?
3. I would like to have all tractors on the same oil to simplify things (although with only four it is not the hardest). Would it be a bad idea to but 15W-40 in all the tractors even the two 300s that have good oil pressure with 10W-30? The voice in the back of my head says to just use the two different types of oil and play it safe.
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Today's Featured Article - Tractor Profile: Earthmaster - by Staff. This tractor, manufactured by the Earthmaster Farm Equipment company in Burbank, California was made for only two years. The Model C came out in 1948 and was followed by the "CN" (narrow-width model), "CNH (narrow-width high-crop model), "CH" (high-crop), "D" and the "DH" (high-crop) in 1949. The main difference between the models was tire size, tractor width and cultivating height. The "D" series were about 20 inches wider overall than the
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