Has anyone used royal purple oil and does it work better than moble 1. 2005 ROAD KING 95 CU. 203 CAMS. DOES ANY ONE HAVE THE COOLING FAN FROM HARLEY.

 

I've used it. I couldn't tell any difference between it and Mobil 1 V-Twin or Amsoil.

 

I think you would be hard pressed to see the differences between synthetic oils, however I really did notice a difference all kidding aside between SYN 3 and Mobil 1 but they are two different oils. One is full synthetic and the Syn 3 isn't a full synthetic.

 

when I used Mobil 1 and syn3 I use to use a half quart every 3,000 miles. With Amsoil I use none in 5,000 miles. Do yourself a favor and go to the AMSOIL corporate site and read the "WHITE PAPER". You may be surprised.

 

Look at Amsoil's white paper and Royal Purple rates pretty low.

I like Wal Mart re-refined dino with a little saw dust in it for sound deadening effect.