Hey, how long are you guys running the HD Synthetic Oil between changes? I put HD Syn. in the primary, engine and trans. Have 2500 miles and was gonna change the engine oil. Should I do the primary and trans. as well, or can they run a while longer. Just looking for opinions.

Joechief

 

There are a bunch of threads on this, I run 5K on the eng oil and change out the primary and trans every other eng oil change. I'm running amsoil in all 3 holes.

 

I do the same, 5000 engine and 10000 tran and prim, using syn3 but switching to amsoil

 

I do the same but use Mobil 1.

 

My local dealer recommends not to push the 5000 mile service even with the syn oil. So I change just my oil at 2500 and do the full service @ 5000. Unless you ride less than 2500, change it each yr. I am sure others have other ideas.....Just my 2cents.

 

I use 20w50 mob1 v twin i am changing all every 3000 run same oil in all 3

 

Does anyone go over the 5k between oil changes with syn??

 

I run amzoil and go 3-4K and tranny has belray. haven't changed it for about 25k hate draining a fluid that looks the same comming out as it did going in.

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07 ultra, rinehart td's, SERT, SE A/C
S&S gear drive, andrews 26 cam.

 

Trans must use gear oil, not motor oil.

 

I have been using SyN3 since it came out, and changing to Amsoil, put the 20/50 in the Eng, Primary but using the 75w-140 in the tranny. Switched over on a trip back to Iowa and the bike runs cooler and smoother. Again there are thousands of threads on this topic and like everything else everybody has opinion but I can tell u that u will not go wrong with amsoil.