Milwaukee 8 oil
#11
03-30-2018, 02:03 PM
I am fast approaching by 1000 Mile service, on my 2018 Milwaukee eight. I have always ran synthetic in my twin cam. But my dealership is suggesting running regular Harley Oil instead of any synthetic. Their logic behind this, is that since the milwaukee-eight holds close to 5 quarts of oil, and has an oil cooler it is not necessary to run synthetic. However since it's a 114 the manual does suggest synthetic in the transmission. I'm just wondering what other people are doing. I am NOT looking for oil brand suggestions, if I use synthetic it will be Mobil 1 V-Twin oil. I have used it in my twin cam and Sportster Motors with great success. I'm just looking for opinions on synthetic versus standard oil in the Milwaukee eight. Thanks
Cheers
Last edited by A1A; 03-30-2018 at 02:18 PM.
#12
03-30-2018, 05:53 PM
Def would go synthetic. Red line is very good oil. I have Mobil one in it now and no issues, (knck on wood) so far. I would prob switch to amsoil or redline next time. Have some Amsoil laying around. Used it in my MX bikes that are at top end all day and never had an issue.
#13
06-23-2022, 05:30 PM
Road Warrior
Sorry to bring up an old thread here. I was just about to order fueling vented oil cap for my M8 114 and one of the two tech tips they had was running conventional oil due to blow by issue. The other tech tip was not to bounce of the rev limiter.Feuling Parts
#14
06-24-2022, 12:55 AM
Club Member
Sorry to bring up an old thread here. I was just about to order fueling vented oil cap for my M8 114 and one of the two tech tips they had was running conventional oil due to blow by issue. The other tech tip was not to bounce of the rev limiter.Feuling Parts
#15
06-24-2022, 07:55 AM
Keep in mind the Harley Syn 3 is a synthetic-blend oil and Amsoil, Mobil 1, Redline, etc. are fully synthetic oils. Both types are good but they are different.
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sherob (06-24-2022)
#16
06-24-2022, 09:44 AM
Club Member
The SYN 3 actually says "Full Synthetic" on the bottle. Not sure if it always did. I don't use the stuff.
Last edited by NorthWestern; 06-24-2022 at 09:46 AM.
#17
06-24-2022, 09:50 AM
Elite HDF Member
So, apparently now they have both. If you go to the HD site they have Full Synthetic, and Synthetic Blend oil available https://www.harley-davidson.com/us/e...rCategoryCodes
The SYN 3 actually says "Full Synthetic" on the bottle. Not sure if it always did. I don't use the stuff.
The SYN 3 actually says "Full Synthetic" on the bottle. Not sure if it always did. I don't use the stuff.
#18
06-24-2022, 11:28 AM
Tourer
Just buy the jug for around $25 at walmart of the 15w50.
https://www.walmart.com/ip/Mobil-1-A...Quart/20713647
https://www.walmart.com/ip/Mobil-1-A...Quart/20713647
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