Synthetic oil change?
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With Amsoil oil and filter you can double the manufaturer's recommended drain interval. So, with the Warrior, Yamaha specifies oil changes every 4k miles or 6 months, using Amsoil oil and filter you can change every 8k miles or 12 months and still be covered by Amsoil's guarantee.
I don't know of any other lube manufacturer that has a guarantee associated with an extended drain interval, I'm not saying there aren't any, just none that I know of.
I don't know of any other lube manufacturer that has a guarantee associated with an extended drain interval, I'm not saying there aren't any, just none that I know of.
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That's encouraging to know.
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What exactly is the guarantee anyway?
Superbee the Oil Geek said:
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My translation of the legalese mumbo jumbo is this: If the oil breaks your engine, Amsoil will fix it, meaning the oil is the cause of the failure. The vehicle must be in sound mechanical condition (before the failure), and if you are still under factory warranty, use it first.
Mumbojumbo link here
Mumbojumbo link here
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