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-   -   Why Syn3 over a alternative full Syn? (https://www.hdforums.com/forum/softail-models/1029737-why-syn3-over-a-alternative-full-syn.html)

tripleb1911 03-01-2015 01:45 AM

Why Syn3 over a alternative full Syn?
 
Apparently Syn-3 is a 60/40 mix. Is there any reason why its better to use a 60/40 mix over a full Syn?

Syn-3 cost as much as the full syn alternatives likes AmsOil, Mobile-1.

I am about to let the dealer do the 1k service. Looks like they will put Syn-3 in the crankcase and Formula+ in the Primary and Tranny.

My last bike a 06 RK I was advised to use BelRay by the dealer in Va. I stopped there and bought some tune up fluids a couple months back and now they advise Redline No shock in the tranny.

I was going to ask the dealer where I am now in Ga about alternative tranny fluid but they only carry Harley fluids, nothing else. So I figure I will let them do the Form+ this first change but I will try the Redline next since I have it.

Still curious about a better crankcase syn oil over Syn-3, problem is just because something becomes popular does not mean its better.

Dan89FLSTC 03-01-2015 06:39 AM

There is a section in this forum called Oil and Oil Related Topics...

tbonetony06 03-01-2015 09:11 AM

I always used full syn Amsoil 75/90 gear lube in the tranny. Here a year or two ago I was talked into trying that Redline stuff. I couldn't get that stuff back out of my bike quick enough, yet there are those who swear by it. I'm very familiar with oils as I worked in a lab for years. If interested IM me and reply privately and the reason for that there is a ton on here about oil and I have commented as well.

Zeus55 03-01-2015 09:19 AM


Originally Posted by tripleb1911 (Post 13758103)
Apparently Syn-3 is a 60/40 mix. Is there any reason why its better to use a 60/40 mix over a full Syn?

Nope... Syn-3 is 100% synthetic of Group III (Hydro-cracked mineral oil).
Like mentioned there are tons of oil threads... have fun!

splattttttt 03-01-2015 10:08 AM


Originally Posted by tbonetony06 (Post 13758848)
I always used full syn Amsoil 75/90 gear lube in the tranny. Here a year or two ago I was talked into trying that Redline stuff. I couldn't get that stuff back out of my bike quick enough,

I've read the entire lube discussion on here as well as several other blogs. And yes Tony... There will always be split decisions on most matters relating to most things. Especially when the topic is engine lubrication.
But I forget why you didn't have a good experience with the Redline Shockproof?

tripleb1911 03-01-2015 12:07 PM

Yes there are lots of oil threads I should review. But occasionally the new info appears with a new threads . No doubt oil threads can lead down the rabbit hole. Lol.

Drone71 03-01-2015 12:10 PM

For whatever reason syn-3 makes my bike vibrate like crazy! When i use anything else.. bike is smooth.. Tried Amsoil.. other fancy stuff all worked great. Right now I am using Castrol synthetic vtwin motor oil... 9.99 at pep boys... works fantastic and easy on the wallet.

checkers 03-01-2015 01:20 PM

Full synthetic or Dino. Short answer is engine noise

splattttttt 03-01-2015 02:24 PM

https://www.hdforums.com/forum/oil-a...ted-topics-30/

splattttttt 03-01-2015 02:30 PM


Originally Posted by LoyalWarrior (Post 12718987)
To date the best combination of lubricants that I have used for my 2012 Street Glide is all Redline Synthetics.

Redline 20w50 Full Synthetic for the Crankcase ((3.3 Qts))
Redline V-Twin Transmission Oil w/Shockproof for the Tranny ((1 Qt.))
Redline Primary Case Oil for the Primary ((38 ozs.))
Redline Complete Fuel System Cleaner for Motorcycles ((1 bottle))

The motorcycle runs great, stays cool, and shifts like butter.




In the case of my 2002 FatBoy and my brothers 2002 Heritage Springer, ((both bikes carburated)) the most recent combination of lubricants we used are:

AMSOil 20w50 Full Synthetic for Crankcase ((3 Qts))
Bel Ray Gear Saver Oil 85w140 for Tranny ((1 Qt.))
Bel Ray Primary Chaincase Oil for Primary ((1 Qt.))

The Heritage Springer has significantly less drag when starting and shifting. Both motorcycles are running great. I truly believe that using specific transmission and primary case oils is the smart thing to do. The all for one mentality is a money making ploy. Take care of your motorcycles and they will take care of you!!!!

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