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FJR Motorcycle Forums
FJR Parts & Accessories Discussions
Where do you buy your oil change kit from
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<blockquote data-quote="#Rocket" data-source="post: 1455529" data-attributes="member: 98498"><p>Viscosity range is also critical to reliability and performance. I use the Rotella T6 15w-40 since it is a reputable synthetic non-energy conserving (no clutch destroying friction modifiers) JASO oil that is reasonably close to the engineer's viscosity range design spec relative to the rather-expensive Yamalube 20w-40. The valve train design, piston ring tensions, transmission, and all other critical internal lubricated surface finishes (porosity and smoothness) are designed for a certain range of cold and hot viscosity. While warm-up may intuitively seem better with the thin 5w cold viscosity--it is causing more metal-to-metal contact on cold start of this high performance engine than the engineer's specification for 20w cold viscosity.</p></blockquote><p></p>
[QUOTE="#Rocket, post: 1455529, member: 98498"] Viscosity range is also critical to reliability and performance. I use the Rotella T6 15w-40 since it is a reputable synthetic non-energy conserving (no clutch destroying friction modifiers) JASO oil that is reasonably close to the engineer's viscosity range design spec relative to the rather-expensive Yamalube 20w-40. The valve train design, piston ring tensions, transmission, and all other critical internal lubricated surface finishes (porosity and smoothness) are designed for a certain range of cold and hot viscosity. While warm-up may intuitively seem better with the thin 5w cold viscosity--it is causing more metal-to-metal contact on cold start of this high performance engine than the engineer's specification for 20w cold viscosity. [/QUOTE]
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Where do you buy your oil change kit from
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