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| Yeah, well I worked in a refinery for 32 years, spent some time in the lube oil packaging plant. Many different brands were filled on the same line, BUT it didn't all come from the same tank. Some had their own specific base oil and/or additive package. When Deere oil was filled, there was a sample taken at the beginning and end of run and sent to Deere. That was in addition to testing done in the on site lab. | |
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