oilman Posted February 19, 2008 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
Stew Posted February 19, 2008 Posted February 19, 2008 Whats oil????? Very good information there! Quote
Sarnie Posted February 19, 2008 Posted February 19, 2008 Nice one Never knew what they mean't, just bought what i was told too Quote
Guest prescience Posted February 19, 2008 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
oilman Posted February 19, 2008 Author 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
Zedrush Posted February 19, 2008 Posted February 19, 2008 Erm my head just exploded please help me pick up all the pieces Quote
Toon Chris Posted February 20, 2008 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
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