Guys, a few years ago i put this calculator together , in excel, to share with BITOG Members. Some of the information in it is outdated but the tool is still very handy. I have seen a lot of posts asking questions about viscosity, blending different oils, and cold weather performace of particular oils. Please keep in mind that the equations used have higher error ratios as you go further from the numbers that you input. Anyway take a look at it and if you have any questions or comments please PM me as i have been very busy and may loose site of the post. Ill try the best i can to answer any questions should there be any.
https://docs.google.com/file/d/0B6pXF6fW...dit?usp=sharing
https://docs.google.com/file/d/0B6pXF6fW...dit?usp=sharing