Came across this while comparing affordable and widely available gear oils for manual transmission (Caltex Thuban GL4 SAE90 and Petron GEP SAE90):
Promethium Marketing Company - Products & Services - Automotive Lubricants
http://www.sjk.com.my/specifications/thuban_gl4.pdf
Seems that Petron REV-X All-Terrain has a high TBN at 16. Interesting..![]()




Reply With Quote

anyone knows how much per liter of this?
