View Single Post
Old 15th June 2007, 10:23   #51 (permalink)
nortones2
Valve Cap
 
Join Date: 12th May 2007
Location: Lancashire
Posts: 34
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader: (0)
Ah, the 4-ball wear test - designed for industrial gear lubricants, steel on steel wear. Not an industry-recognised test for engine oil.
nortones2 is offline   Reply With Quote