10W30 vs. 10W40 The Essential Guide for Engine Oil Expertise

As others have said you can use both grades in any Honda bike however if you run 10-30 you may see better mpg since 10-40 is a slightly heaver ... In the 10W-40 engine oil, the 10W (W = winter) simply mean the oil must have certain viscosity or "thickness" flowing at low temperature. The lower the "W" ... First off lets look at what 10W30 & 10W40 means. The first number, they are both 10 weight oils, no difference when cold. The second number, 30 ... The main difference between the Castrol Edge 10W-30 and Castrol MAGNATEC 10W-40 lies in their high-temperature viscosity and their targeted use. In this matchup, 10W40 oil is slightly thicker than the 10W30 variant. The high-temperature viscosity plays a crucial role; remember, the higher the number ... Redline's 5w30 starts out with a thinner viscosity of 10.6cst at 100c, compared to it's 10w30 which is at 11.0. Also, I've seen oil analysis ... I run 10w30 VR1 in my 200, it sits at 25+ psi at a hot idle in 90-degree Tennessee heat. If your crank bearings are in spec, 10w30 is perfectly fine. Dive into the world of engine oils with our informative guide on the key differences between 10W30 and 10W40. In this video, we unravel the ... The difference between 10w30 and 10w40 is the thickness of the oil at operating/high temperatures, at which 10w40 is thicker than 10w30. The only time you have to even consider going to thinner oil when it gets cold is if the starter can't turn over the motor fast enough to start the motor.