Spectro trans and Amsoil primary
#1
Spectro trans and Amsoil primary
I just did 3 hole change on my Ultra. The bike had records showing dealer oil changes with Syn3 in all holes when I bought it. I always use Mobil 1 in my engines, but went back with Syn3 in trans/primary when I changed fluid last time. This time, I had a gift card for a local moto shop. They had Amsoil primary, and Spectro HD 6 speed trans in stock, so I grabbed those. The bike shifts MUCH smoother, less "notchy" than with the Syn3. Don't know if its from the primary or the trans, since I changed both at same time. But I won't go back to Syn3.
#3
I been using Amsoil synthetic primary oil and Spectro 6 Speed trans oil for years on my SG. I am not a fan of using 20W-50 in all 3 holes. Just my .
The following users liked this post:
Rob Harper (04-12-2023)
#4
10K on the old fluids, but it shifted hard/notchy since I've had the bike, new or old Sny3. The Spectro is 75W140. Not sure the weight of the Amsoil, it wasn't on the container.
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BigD48 (04-12-2023)
#5
According to the Amsoil website, the Kinematic Viscosity @ 100°C, cSt is 18.7, which specs out to a SAE 50 grade oil.
https://amsoilcontent.com/ams/lit/da...tins/g3302.pdf
https://amsoilcontent.com/ams/lit/da...tins/g3302.pdf
The following 2 users liked this post by BigD48:
Rob Harper (04-12-2023),
smitty901 (04-12-2023)
#6
Just did my 1000 mile service on the 2022 Heritage last week. Amsoil in all 3 holes. 20W-50 in motor. Amsoil primary and used their transmission lube, also. Funny how they don't list the viscosity on the primary and transmission lubes. I am also not a believer in 20W50 for the primary and transmission.
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Goose_NC (04-19-2023)
#7
I believe that the Amsoil primary is more like a 40 weight oil. I use it in my primary and like the way the clutch works with it. Also using the Amsoil transmission lube. Both seem to work fine.
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#9
I just did 3 hole change on my Ultra. The bike had records showing dealer oil changes with Syn3 in all holes when I bought it. I always use Mobil 1 in my engines, but went back with Syn3 in trans/primary when I changed fluid last time. This time, I had a gift card for a local moto shop. They had Amsoil primary, and Spectro HD 6 speed trans in stock, so I grabbed those. The bike shifts MUCH smoother, less "notchy" than with the Syn3. Don't know if its from the primary or the trans, since I changed both at same time. But I won't go back to Syn3.
I bought a used Ultra Classic 2019 and changed the gear oil to Spectro 6 on advice of my indy mechanic and I noticed better shifting. A year later I switched to Amsoil Primary fluid and noticed better clutch release and engagement. I now use both of those products consistently.
The following users liked this post:
Goose_NC (04-19-2023)