My new to me 03 WG is going to get an oil change right away. I used Mobile 1 syn. in the sporty, should I used the same thing in the WG? Or...is there a better choice?

 

Spectro for me

 

No way you should be using foreign metric oil in Harley Iron. Prime rib TREX American crude all the way.

 

mobil 1 , amsoil, redline, all are good oils and Im sure there are more choices out there. Mobil 1 is fine. I use it in my motor and just use primary fluid and transmission fluid otherwise. Its cheaper to do this way and runs fine.

 

I run M1 in my FB! Engine seems to like it fine! I run M1 in all things with pistons...even my Honda lawn mower!

 

What oil was in the engine when you bought it?

 

????? Who know, bought it used from a stealer.

 

Go with what you know works! I use Amsoilall around, engine and clutch 20w50, tranny 75/90 there, and 10 weight fork oil.

 

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