2018 M8 and Synthetic Oils - Road Glide Forums
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post #1 of 38 (permalink) Old 01-11-2018, 05:52 PM Thread Starter
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2018 M8 and Synthetic Oils

My dealer advised me that if I switch over to synthetic oils at my 1k service, I would not need to bring the bike in at 2,500 mile intervals and I would simply need to service the bike/change oils at the 5k milestones. Can anyone confirm if this is true?


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post #2 of 38 (permalink) Old 01-11-2018, 06:41 PM
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keep an eye on all the fluid levels and if you notice any running issues or funky noises make them aware of your concerns.

5K is nothing on these bikes. you'll be fine.

bikes will last years and tens of 1000s of miles if you keep up with maintenance. they usually tell you if there is something amiss.

get used to checking things over whenever you clean it. you'll catch a lot of little things in the process, and become one with the bike lol

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post #3 of 38 (permalink) Old 01-11-2018, 06:52 PM
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Quote:
Originally Posted by RoadglideinMO View Post
My dealer advised me that if I switch over to synthetic oils at my 1k service, I would not need to bring the bike in at 2,500 mile intervals and I would simply need to service the bike/change oils at the 5k milestones. Can anyone confirm if this is true?


What the owner manual says? The stealer are probably not in your best interest $$$ for interval but theirs ;-) synthetic or mineral will be an eternal discussion, but from wrenching on helicopters for 28 years we use synthetic oil.


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post #4 of 38 (permalink) Old 01-11-2018, 07:00 PM Thread Starter
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I ask because they offered a service plan when I bought the bike (which I declined because I'm 160 miles from them). The service plan offered was that they change the oil to synthetic at 1k miles and then I only have to return for the milestone services at 5k intervals and skip the in between oil changes. Just didn't know if others were aware of this or if they have been advised otherwise- curiosity got the best of me on this one!!

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What the owner manual says? The stealer are probably not in your best interest $$$ for interval but theirs ;-) synthetic or mineral will be an eternal discussion, but from wrenching on helicopters for 28 years we use synthetic oil.


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post #5 of 38 (permalink) Old 01-11-2018, 09:35 PM
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Just get yourself a manual and do your own basic maintenance you will save load of $ and have the satisfaction that is done properly. Like someone mention in an other thread, google ride it wrench it, look like very well made videos.


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post #6 of 38 (permalink) Old 01-11-2018, 10:25 PM
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I was told the same on both my 16 & 17 from two different dealers !
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post #7 of 38 (permalink) Old 01-12-2018, 05:56 AM
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I have a 18 M8 and my owners manual indicates to change every 5,000 miles. It does not say you have to use syn to be able to do that. Sure it tells you to use Harley oil, syn3 oe Dino, but for warranty, the oil you use must meet Harley’s requirements. As already stated, buy a maintenance manual and do your own service.
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post #8 of 38 (permalink) Old 01-12-2018, 10:28 AM Thread Starter
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I appreciate the input... my bike is being delivered today, in sub 0 windchills, so at least I'll have time to read through my manual before heading out for a ride!!!

I'll most likely do service on my own, I was just wanting to confirm the oil change intervals and if others are using Syn or regular old motor oils in their bikes.
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post #9 of 38 (permalink) Old 01-25-2018, 08:28 PM
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I bought a new 2012 Streetglide rode it 34K miles, changed oil every 5000. I used AMSOIL and I always send a sample off to a lab to have it tested. Test results always came back good.
So now I just purchased a 2018 Road Glide Ultra, the dealer advised me to use conventional HD motor oil and in summer months use straight 50w. Has anyone else with a M8 been told this? I ama AMSOIL independent dealer so my choice oil is AMSOIL but he discouraged it. I will be reaching out to AMSOIL R&D dept and HD R&D Dept and get their opinions.
Anyone have any input on this?

Thanks
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post #10 of 38 (permalink) Old 01-25-2018, 08:35 PM
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I run full synthetics in my bike and I change all 3 holes every 5k ish miles. Not a necessity but its just my thing. To me its cheap and I enjoy doing it.
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