Motul has a very good reputation, but it's hard to find in Australia. When you do it's about $20 per litre ($13.40 USD per 0.9 quart), and it's never on sale. A HDEO will be about half that regular price, and even less when on sale, say $5 to $10 per litre.
I agree that a regular PCMO 10W40 can shear down quickly, however HDEOs are made to resist shear. Hence the popularity of HDEOs like Rotella (Rimula here) in shared sump motorcycles, which are shear monsters due to the engine oil also being used in the gear box.
I agree that a regular PCMO 10W40 can shear down quickly, however HDEOs are made to resist shear. Hence the popularity of HDEOs like Rotella (Rimula here) in shared sump motorcycles, which are shear monsters due to the engine oil also being used in the gear box.