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Reply to "351C lubrication system & lubricants"

quote:
Originally posted by Rocky:
You should see the chart on the 90W gear oil.

At cold it took about 150 sec, and at hot it was very close to the 2 second viscosity level of the other oils..

That is because gear oil and crankcase oil are on two different grade designation scales. SAE 90 gear oil is about equivalent to SAE 40 - 50 crankcase oil. Here is a link to a chart.

http://www.synlube.com/images/viscosity_table_2.jpg
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