Thank you for contacting Mobil. The full synthetic base stock technology we use in Mobil 1 products allows us to limit or eliminate (depending on the viscosity grade) the use of polymers known as viscosity index improvers. These polymers help conventional oils meet the requirements of multi-grade oils. So they are good for low temperature/high temperature performance balance for conventional oils. Unfortunately, they are also less shear stable than oil. So at high temperatures and/or high localized pressures, the polymers tend to break down, resulting in loss of viscosity of the oil. Since Mobil 1 Motorcycle Oils use little or no viscosity index improvers, they are inherently more shear stable than oils with VI improvers. If you have any additional questions, you may contact us at our E-mail address: [EMAIL PROTECTED] or by phone at 1-800-ASKMOBIL. -- =============================================== Paul Sayegh V-Max Technical List Administrator VMOA Northwest Director V-Max web page http://www.sayegh.org/tips.htm =============================================== ............................................. To unsubscribe go to http://www.sayegh.org/unsubscribe.htm .............................................
