Doing routine maintenance. I have heard that there are better synthetic oils out there than the Harley brand. Valvoline was mentioned. Could members let me know what they think?

 

I use Amsoil 20w50 in engine, Amsoil 75/90 in trannyand HD formula+. Mobil 1 is always a good choice too.

 

I use Amsoil for 20W50 V-Twinin theengine and primary, redline shock proof in the tranny.

 

Redline in all three holes for me.

 

After reading numerous posts on this debate I think I am going to switch to Mobil 1 15w 50 synthetic in the engine. I am using 20w 50 Amsoil now and think it is a good quality oil but Ilike the thought of if I need to add oil on a trip I can stop almost anywhere and pick up the Mobil 1. Some of the other oils are going to be bike shop specific. In the trans I use Mobil 1 75 90 syn gear lube and primary just plain old primary oil. Just my .02

 

that's what i use, no problems

 

Availability is a factor for me. It's 60 miles in any direction to a H-D dealer. Walmart is virtually everywhere here in the South. 15W50 Mobil 1 is everywhere, Mobil 1 75W90 gear oil is everywhere and i use synthetic ATF in the primary and it's everywhere. i use Wix filters that are easy to find and are rated higher than the Purolator that Harley uses. Amsoil is fine BUT you have to plan ahead. I don't think there is an oil on the market meeting government specs that would cause problems.

 

I'm using Mobil 1 20W50 V-Twin in engine and primary and Mobil 1 75/90 in the tranny and am very happy with the results.

 

Amsoil 20w50 in the engine, Amsoil 75/90 in the tranny and Syn 3 in the primary. Tried quite a few combinations over the years and this is what has worked best for me.