oilman Posted February 19, 2008 Share Posted February 19, 2008 10w-40, what does it mean? We have answered thousands of oil questions in the last 4 years but the most frequently asked one is “What do the numbers mean?†Quote Link to comment Share on other sites More sharing options...
Stew Posted February 19, 2008 Share Posted February 19, 2008 Whats oil????? Very good information there! Quote Link to comment Share on other sites More sharing options...
Sarnie Posted February 19, 2008 Share Posted February 19, 2008 Nice one Never knew what they mean't, just bought what i was told too Quote Link to comment Share on other sites More sharing options...
Guest prescience Posted February 19, 2008 Share Posted February 19, 2008 What's 'cst' - it's amazing that a 15w-40 seems to be 100x more viscous at 0degs that at 100 degs Quote Link to comment Share on other sites More sharing options...
oilman Posted February 19, 2008 Author Share Posted February 19, 2008 A centistoke (cst) is the unit in which viscosity is measured. The 15w-40 will be very thick when cold compared to hot as all oils thin with heat. This is why when people say you cannot us a 5w-40, its too thin you must use 10w-40 is bollocks. Cheers Guy. Quote Link to comment Share on other sites More sharing options...
Zedrush Posted February 19, 2008 Share Posted February 19, 2008 Erm my head just exploded please help me pick up all the pieces Quote Link to comment Share on other sites More sharing options...
Toon Chris Posted February 20, 2008 Share Posted February 20, 2008 This is why when people say you cannot us a 5w-40, its too thin you must use 10w-40 is bollocks. I love this technical stuff Quote Link to comment Share on other sites More sharing options...
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