i recently bought a DS650 project bike and i was wondering what kind of oil i should use

from the owners manual i was getting the following statements

use BRP 5w40 synthetic

use 10w40 in summer

use 5w30 in winter

anything but XP-S 5w40 Synthetic may cause clutch slippage


I have an '89 honda 300 wet clutch and use Mobile 1 10w40 full synthetic so i was thinking of just using that

 

use only brp synthetic, says right in my 04 owners manual in big bold black letters or 10w40 mineral base

 

ended up using the Mobile 1 4RT 10w40 full synthetic, works great

 

Mobile one and Amsoil synthetic sate right on the bottle "Wet clutch Compatible" .
Or any brand of synthetic motorcycle 4 stroke grade oil. All motorcycles have wet clutches.

Brp does not have the wet clutch full synthetic oil market cornered.

I like 0w-40 (only comes in synthetic) because it cover winter and summer conditions.
Chart only cover 0w-30 but 0w-40 has a even higher temp range.

 

I have been using Klotz 10w40 for 5 + years with great results.