Royal Purple?

Mr Gazza · 12-02-2022, 05:54 PM

For many years I have used Castrol 1 power racing fully synthetic oil in the Monster and have sometimes wondered if I could do better?

Looking for a suitable oil to use in the old Commando, I have come across an exhaustive test on many oils by Jim Comstock, who tested all the oils with a real world application to Commandos in mind. https://www.accessnorton.com/Oil-Tests/NortonOil.php#9

Two brands that I had previously not heard of stand out, Royal Purple and Red Line. These are US produced oils.
I am considering changing to Royal Purple HPS 10w40 for the Monster.
Obviously the needs of a Commando are a bit different to an air cooled M900 engine, but it does get very good reviews elsewhere too.

I wondered has anyone heard of it or has tried it and what you reckon to it?

12-02-2022, 05:54 PM	#1
Mr Gazza Lord of the Rings Join Date: May 2013 Location: Norwich Bike: M900sie Posts: 5,828	Royal Purple? For many years I have used Castrol 1 power racing fully synthetic oil in the Monster and have sometimes wondered if I could do better? Looking for a suitable oil to use in the old Commando, I have come across an exhaustive test on many oils by Jim Comstock, who tested all the oils with a real world application to Commandos in mind. https://www.accessnorton.com/Oil-Tests/NortonOil.php#9 Two brands that I had previously not heard of stand out, Royal Purple and Red Line. These are US produced oils. I am considering changing to Royal Purple HPS 10w40 for the Monster. Obviously the needs of a Commando are a bit different to an air cooled M900 engine, but it does get very good reviews elsewhere too. I wondered has anyone heard of it or has tried it and what you reckon to it? __________________