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This message has been edited. Last edited by: Smoky14,

Dear Smoky,

Change extension is possible, but you need Lab oil analysis to see if this is safe.

A few that we know:
http://www.pdma.com/oil.html
http://www.testoil.com/
http://www.predictusa.com/
http://www.wearcheck.com/services/
http://www.analystsinc.com
http://wetestit.com/
http://www.herguth.com/
http://www.intertek-cb.com/ Maybe more than you need
http://www.staveleyna.com/

Test first/ ask for help from the lab/ make a good decision.