Syn3 in tranny and primary? : V-Twin Forum: Harley Davidson Forums

John Klad · 07-02-2009, 08:18 PM

I would like to hear from some of you using Syn3 in both the primary and tranny after 10,000 to 15,000 miles or more. Any issues? Have any of you gone back to Formula+? If so, why? I recenty switched to syn3 in the tranny and primary, and I am running Amsoil 20w-50 in the engine.

Geezer-Glide · 07-02-2009, 09:30 PM

Then why not run Amsoil in all three holes? You can you know. There's also Amsoil Supershift for the primary and Severe Gear in three weights for the tranny. All three types of oil are extended drain.

lowrider13 · 07-04-2009, 07:47 AM

I ran syn 3 in all three until 12k. Syn3 in your primary will make your clutch slip after awhile because of the anti friction additive. I put amsoil 20/50 syn eng. and MB1 75/90 in trans. Shifts a little better.

strokerjlk · 07-04-2009, 07:59 AM

ran it in all 3 holes for 30,000 no problems.
since my new build I have switched to other brands.

Gary7 · 07-04-2009, 12:00 PM

Quote:

Originally Posted by lowrider13

I ran syn 3 in all three until 12k. Syn3 in your primary will make your clutch slip after awhile because of the anti friction additive.

Yeah, I'm sure that's why Harley specifically recommends Syn3 for use in the primary and uses it as factory fill in the primary of all CVO bikes.

Faast Ed · 07-04-2009, 12:15 PM

Quote:

Originally Posted by Gary7

Yeah, I'm sure that's why Harley specifically recommends Syn3 for use in the primary and uses it as factory fill in the primary of all CVO bikes.

There are better alternatives. I give a chit what HD "recommends".

There are better alternatives. Period.

HDSG · 07-04-2009, 12:26 PM

Quote:

Originally Posted by Gary7

Yeah, I'm sure that's why Harley specifically recommends Syn3 for use in the primary and uses it as factory fill in the primary of all CVO bikes.

Ford recommenda 5W-20 In most of their engines................do you think that has to do with the EPA or mileage ratings per gallon or do you think they are concenred that you get 200, 000 miles out of the motor?????????????

Gary7 · 07-04-2009, 01:05 PM

Quote:

Originally Posted by HDSG

Ford recommenda 5W-20 In most of their engines................do you think that has to do with the EPA or mileage ratings per gallon or do you think they are concenred that you get 200, 000 miles out of the motor?????????????

Huh? What does that have to do with using Syn3 in the primary? Harley specifically developed Syn3 to be used in all three holes. Are there better lubricants for all three holes? Absolutely. But saying that your clutch will slip if you use Syn3 in the primary because of the friction modifiers is ridiculous.

Also, you may want to do a little research on the 5w20 and engine longevity. There are plenty of documented cases over on BITOG of engines still going strong with 100,000+ miles on steady diet of 5w20.

Faast Ed · 07-04-2009, 01:16 PM

Dude. Do some experimenting and find out for yourself.

"Same oil in all three holes" is not, and has never been, the best approach for your bike.
I'm pretty sure HD no longer endorces that recommendation anyway and I'd be curious as to why they stopped.

Run what you want. Don't waste your time here trading posts if you are not willing to listen to what others have to say.

fatty239 · 07-04-2009, 08:04 PM

[quote=Faast Ed;1631201]"Same oil in all three holes" is not, and has never been, the best approach for your bike.

I couldn't agree more!

vindex1963 · 07-04-2009, 09:28 PM

Quote:

Originally Posted by Faast Ed

Dude. Do some experimenting and find out for yourself.

Or do something crazy like search the forum and get 6 months, 3 days, 9 hours and 11 minutes worth of reading on this worn out subject.

NHFree1 · 07-05-2009, 09:58 PM

Quote:

Originally Posted by vindex1963

Or do something crazy like search the forum and get 6 months, 3 days, 9 hours and 11 minutes worth of reading on this worn out subject.

...but this thread added 3 minutes to your total....should be 14.

vindex1963 · 07-05-2009, 10:10 PM

Quote:

Originally Posted by NHFree1

...but this thread added 3 minutes to your total....should be 14.

6 months, 3 days, 9 hours, 14 minutes

SFTL-1 · 07-05-2009, 11:07 PM

Syn 3 in the primary will work OK, but there are better choices available. I've used many 20W-50 synthetic motor oils that are JASO MA certified and have never had any clutch slippage, but I did start to experience a "grabbiness" feeling in the clutch action. I switched to Bel-Ray 80W Gear Saver Transmission Oil which is also their "Primary Chaincase Lube" and will never go back to using motor oil in my primary again. The Bel Ray product is great and my clutch action is smooth as silk!

lowrider13 · 07-12-2009, 08:26 AM

Quote:

Originally Posted by Faast Ed

Dude. Do some experimenting and find out for yourself.

"Same oil in all three holes" is not, and has never been, the best approach for your bike.
I'm pretty sure HD no longer endorces that recommendation anyway and I'd be curious as to why they stopped.

Run what you want. Don't waste your time here trading posts if you are not willing to listen to what others have to say.

AMEN , run what you want Gary, you are out numbered.