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Old 04-08-2010, 04:37 PM
Chris S Chris S is offline
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Location: Kanagawa, Japan
 
Join Date: Jan 2008
Posts: 797
Mein Auto: 1997 323i
ok read it all but how do I figure the viscosity out? been using 10w-40 thinking about going to the -50 but cant figure out the meaning of the W... how does the w affect things... ie will a 5w-40 or 5w-50 do well in heat as well as 10w-40 or 10w-50 since most of the oils i can find seem to be 5w
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