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Run what you like, but I agree that ~5K is the tops for me before I'm changing it and I run Amsoil. High ambient temperatures are a fact of life for me, and Amsoil performed fantastically, even when my engine temps exceeded 340 degrees for extended periods of time. Would other oils provide me equal protection? Perhaps, but I go with what I know.
I read that Amsoil can be extended up to 2x the normal drain interval.
That's what Amsoil says, but without a guarantee to back it up I'm not willing to risk it. I'm gonna give MOCO the benefit of the doubt on this one and keep the oil change intervals at 5000 miles because after all, they're the ones who have to honor my warranty, not Amsoil.
You can run oil over intervals, if your miles are mostly highway. In the city, all bets are off. My advice, change it now, and break it in before making the Sturgis run. Cheap insurance for a really long road trip.
I was running amsoil in my bike until the 10000 svc. Had them put in Syn 3. Liked my bike better on Amsoil. Will change it soon. YMMV.
Guys... Just as important as oil is the filter. I do this for a living. Harley Super 5 filter only filters to 5 micron. Damage starts at 5. Amsoil oil is far superior than HD Synth and Ansoil Premium filter goes down to 2 micron. I test oil samples monthly so I know what I'm saying.
Amsoil claims 15 micron absolute efficiency.. I don't follow your samples..
Altho the Amsoil is pricey, I still change every 3k maybe 4, but for the most part 3k .... I change it and have the assurance that my life blood is clean and has the proper rating!
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Been running Amsoil in everything we own for over 10 yrs,other than our everyday drivers which go the full year between changes,the rest,tractors, tillers, mowers,go at least 2 yrs.Compressors go even longer.All our equip runs top shelf all the time.It did take a long time to get used to letting oil changes go beyond 3000 miles,but we did and have saved an awful lot of money over the years.
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