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- Sep 17, 2020
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- Austin Texas
I would like to clarify and add additional information to my original post. If you look closely at the labels on Motul 300V “Road Racing” and their “off road” oils, you’ll notice a change in the Road Racing 300V. It now says “Organic Base”. The off road 300V still says “Ester base”. This is a big difference. Ester base oil is superior to organic base oil. I’ve noticed Motul’s automotive 300V oils also changed to the “organic” verbiage. I suspect the reason is so that Motul can get the API certification for their higher selling automotive and street motorcycle oil. Off road does not need to comply with emissions regulations.
I’m not feeling as warm and fussy about Motul these days. It’s still excellent oil, but I’m interested in the absolute best oil for our motorcycles. I know there are lots of options, but I prefer to stick with a more factual approach. One oil I forgot to mention, is Maxima “Extra”. This is a API Group 5 Ester synthetic oil that comes in all the usual viscosities. Their 10W/60 and 15W/50 would be the most common for our use. What really stands out on their Technical Data Sheet is the VI (Viscosity Index). The VI is well over 210 for both of these oils. VI tells you how fast the oil shears down. Or, how well does the oil maintain its original viscosity. Straight cut gears in high performance motorcycle engines is very hard on the oil. That’s one reason automotive oil is not good in a dry clutch motorcycle. Automotive oils shear down very quickly in a motorcycle. The lower the VI, the faster the oil breaks down. Motul 300V is about 180. Mobil One motorcycle oils are about 160. Maxima “Extra” has the highest VI I can find. Oil companies often don’t publish all of their technical data. That means the consumer must infer things from the data they do publish. In order to have a VI above 210, the oil must also have very high quality in other important areas. The HTHS and NOACK volatility must also be very good. Maxima Extra will also have double the zinc. The only other high zinc ester Synthetic motorcycle oil is Red Line Power Sport. If you want to continue with 300V, I would use the off road version.
One last thing, Maxima Extra is the most expensive of all these oils. Ester base stocks are very expensive, but also the highest quality.
Are these two the same? Just marketing change? @VYRUS