Custom Vehicle Discussions > Screamin' EagleĀ® Road KingĀ®

Synthetic oil

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mfgreen:
What are your experiences with synthetic oils in the SERKs?

ashcraft:
Don't know yet, just changed my 2002 last week to all SYN-3. It feels like it shifts a little smoother, but too early to tell. I also wanted to see if it ran any cooler in the summer heat

naitram:

naitram:
i use mobile 1 syn. in my softail ( S&S motor ). ive had the dealer do my oil changes so far on the FLHRSEI.  the only place i would be careful is the primary. if its too slippery you could have clutch trouble

mfgreen:
My dealer just completed the 1000 mi check up this week and the lubrication was changed to SYN-3, H-D's
synthetic. The bike seems to run and shift smoother with it in. The checkup was late in the mileage due to the shop being about 2 weeks back logged.  Probably going to Amsoil next change.

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