Review: Motul 300V, 10W40

Without any intention of starting a religious war, I'd like to point out that having just switched from relatively inexpensive Castrol mineral oil (chosen on the basis of making frequent oil changes) to full-synthetic Motul 300V, I'm rather impressed by the immediately noticeable improvements in shifting and engine noise.

 To some, the Motul may seem like pricy overkill in a WR250R. But after spending many hours scouring online reviews, oil test reports, and other facts, I chose the Motul on the basis that as a high-performance racing oil for extreme conditions, it would appear to offer improved long-term performance for long adventure rides on my particular bike. Its proven resistance to viscosity breakdown has heightened importance in a small engine, where there's only 1.4L of oil. The oil simply takes more mechanical abuse per unit volume for a given riding distance than in a larger thumper like my old KLR650, which had at least a liter more oil to share the abuse.

This oil will get a real test on a long ride this summer. My plan is to take samples for oil testing to validate my hypothesis.